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HOW TO FIND AN ABBREVIATION: you can do it two ways:

  1. browse as with any other dictionary (you can use the links to jump to a certain letter),
  2. use the "find" function of your browser (Explorer or Netscape): Edit, Find: type in your abbreviation followed by a comma (eg."ABC,").


If you are looking for an abbreviation that is not in my dictionary please e-mail it to me ( and I will try to answer back as soon as possible and I will also post it here.
This dictionary is in permanent addition. As of today there are over 10,000 abbreviations. Last time updated June 6, 2003.

Now available as Medical Abbreviations pocket for PDA!...
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(1390 abbreviations)


3AB, 3-aminobenzamide.

A&B, apnea and bradycardia.

A&BC, air and bone conduction.

A&I, allergy and immunology.

A&P, anterior and posterior.

A&P, auscultation and palpation.

A&P, auscultation and percussion.

A&W, alive and well.

A, adenine.

A, alanine.

A, arteriole.

A, asymptomatic, no symptoms (e.g. in Hodgkin lymphoma).

a, autopsy.

A/B acid-base ratio.

A/G, albumin/globulin ratio.

A/O, alert and orientated.

A/V, ampere/volt.

A/V, arteriovenous.

A>B, air greater than bone (conduction).

A1, aortic first sound.

a1AT, alpha-1-antitrypsin.

A2, aortic second sound.

A2U, alpha 2u-globulin.

A-a 02, alveolo-arterial oxygen tension.

aa seq, amino acid sequence.

aa, (Greek: Ana) of each.

AA, arachidonic acid.

aa, arteries.

AA, reactive (secondary) amyloidosis.

AAA, abdominal aortic aneurysm.

AAA, adenine-adenine-adenine codon for lysine.

AAA, diagnostic arthroscopy, operative arthroscopy, and possible operative arthrotomy.

AAAASF, American Association for Accreditation of Ambulatory Surgery Facilities.

AAAP, activity of antiactivator in plasma.

AABB, American Association of Blood Banks.

AAC, adenine-adenine-cytosine codon for asparagine.

AACPDM, American Academy for Cerebral Palsy and Developmental Medicine (also: AAOS Specialty Societies).

AACR, American Association for Cancer Research.

Aad, aminoadipic acid.

AADC, amino acid decarboxylase.

AAE, American Association of Endodontists.

AAETS, American Academy of Experts in Traumatic Stress.

AAF, 2-acetylaminofluorene.

AAF, anterior auditory field.

AAF, astrocytoma with atypical/anaplastic foci.

AAF/OL, anaplastic astrocytomas /oligodendrogliomas.

AAFP, American Academy of Family Physicians.

AAG, adenine-adenine-guanine codon for lysine.

AAHKS, American Association of Hip and Knee Surgeons (also: AAOS Specialty Societies).

AAHS, American Association for Hand Surgery (also: AAOS Related Organizations).

AAL, anterior axillary line.

AAMC, Association of American Medical Colleges.

AAMI, Advancement of Medical Instrumentation.

AAMT, American Association for Medical Transcriptionists.

AAN, American Academy of Neurology.

AANA, Arthroscopy Association of North America (also: AAOS Related Organizations).

AANOS, The American Academy of Neurological and Orthopaedic Surgeons.

AANS, American Association of Neurological Surgeons.

AAO, American Academy of Ophthalmology.

AAo, ascending aorta.

AAOC, antacid of choice.

AAofA, Ambulance Association of America.

AAOFAS, American Association of Orthopaedic Foot and Ankle Surgeons.

AAOHN, American Association of Occupational Health Nurses.

AAOM, American Academy of Oral Medicine.

AAOO, American Academy of Ophthalmology and Otolaryngology.

AAOP, American Academy of Oral Pathology.

AAOP, American Academy of Orthotists and Prosthetists.

AAOPP, American Association of Osteopathic Postgraduate Physicians.

AAOS, American Academy of Orthopaedic Surgery.

AAOT, Asociacion Argentina de Ortopedia y Traumatologia (Argentinian Orthopaedic Association).

AAOx3, awake, alert and oriented x 3 (to person, place and time).

AAP, air at atmospheric pressure.

AAP, American Academy of Pediatrics.

AAP, American Academy of Pedodontics.

AAP, American Academy of Periodontology.

AAP, American Academy of Psychoanalysis.

AAP, American Academy of Psychotherapists.

AAP, American Association of Pathologists.

AAP, aminoantipyrine.

AAP, Association for the Advancement of Psychoanalysis.

AAP, Association of Academic Physiatrists.

AAP, Association of American Physicians.

AaP02, (A-a) P02, alveolo-arterial oxygen tension difference.

AAPA, American Academy of Physician Assistants.

AAPA, American Association of Pathologist Assistants.

AAPB, American Association of Pathologists and Bacteriologists.

AAPC, antibiotic-associated pseudomembranous colitis.

AAPCC, adjusted annual per capita cost.

AAPCC, adjusted average per capita cost.

AAPCC, American Association of Poison Control Centers.

AaPco2, (A-a)Pc02 alveolo-arterial carbon dioxide tension difference.

AAPF, anti-arteriosclerosis polysaccharide factor.

AAPH, 2,2'-azobis-(amidinopropane) dihydrochloride.

AAPHD, American Association of Public Health Dentists.

AAPHP, American Association of Public Health Physicians.

AAPL, American Academy of Psychiatry and the Law.

AAPM&R, American Academy of Physical Medicine and Rehabilitation.

AAPM, American Association of Physicists in Medicine.

AAPMC, antibiotic-associated pseudo-membranous colitis.

AAPMR, American Academy of Physical Medicine and Rehabilitation.

AAPOS, American Association for Pediatric Ophthalmology and Strabismus.

AAPP, American Academy on Physician and Patient.

AAPPO, American Association of Preferred Provider Organizations.

AAPS, American Association of Plastic Surgeons.

AAPS, Arizona Articulation Proficiency Scale.

AAPS, Association of American Physicians and Surgeons.

AAPSM, American Academy of Podiatric Sports Medicine.

AAR, active avoidance reaction.

AAR, acute articular rheumatism.

aar, against all risks.

AAR, antigen-antiglobulin reaction.

AARC, American Association for Respiratory Care.

AARDA, American Autoimune Related Diseases Association.

AARE, automobile accident, rear end.

AAROM, active assertive range of motion.

AAROM, active assisted range of motion.

AARP, American Association of Retired Persons.

AAS, Aarskog-Scott (syndrome).

AAS, acid aspiration syndrome.

AAS, alcoholic abstinence syndrome.

AAS, American Academy of Sanitarians.

AAS, American Analgesia Society.

AAS, aneurysm of atrial septum.

AAS, anthrax anti serum.

AAS, aortic arch syndrome.

AAS, atomic absorption spectrophotometry.

AASD, American Academy of Stress Disorders.

AASH, adrenal androgen stimulating hormone.

AASH, American Association for the Study of Headache.

AASK, African American Study of Kidney Diseases and Hypertension Pilot Study.

AASP, acute atrophic spinal paralysis.

AASP, American Association of Senior Physicians.

AASP, ascending aorta synchronized pulsation.

AASS, American Association for Social Security.

AAST, American Association for the Surgery of Trauma.

AAT, Aachen Aphasia Test.

AAT, academic aptitude test.

AAT, alanine aminotransferase.

AAT, alkylating agent therapy.

AAT, alpha-1-antitrypsin.

AAT, atrial triggered (pacemaker).

AAT, auditory apperception test.

AAT, automatic atrial tachycardia.

AATS, American Association for Thoracic Surgery.

AAU, acute anterior uveitis.

AAU, adenine-adenine-uracil codon for asparagine.

AAV, adeno-associated virus.

AAVMC, Association of American Veterinary Medical Colleges.

AAVP, American Association of Veterinary Parasitologists.

AAVPT, American Academy of Veterinary Pharmacology and Therapeutics.

AAW, anterior aortic wall.

AAWD, American Association of Women Dentists.

AAWM, American Academy of Wound Management.

AB, Ab, abortion.

AB, abdominal.

AB, abnormal.

ab, abortion.

AB, Ace bandage.

AB, active bilaterally.

AB, aid to the blind.

AB, alcian blue.

AB, alertness behavior.

AB, antibiotic.

Ab, antibiotic.

ab, antibody.

Ab, antibody.

AB, antibody.

AB, antigen binding.

AB, apex beat.

AB, asbestos body.

AB, asthmatic bronchitis.

AB, axiobuccal.

aB, azure B.

AB, Bachelor of Arts (Lat.Artium Baccalaureus).

AB, blood group AB.

ABA, abscissic acid.

ABA, allergic bronchopulmonary aspergillosis.

ABA, American Board of Anesthesiologists.

ABA, antibacterial activity.

ABA, arrest before arrival.

ABA, Arthroscopie Belge - Belgian Arthroscopy Association.

ABAT, American Board of Applied Toxicology.

Abb, abbreviations.

ABB, Albright-Butler-Bloomberg syndrome.

ABB, American Board of Bioanalysis.

ABB, Asea Brown Boveri.

ABBQ, Acquired Immunodeficiency Syndrome Beliefs and Behavior Questionnaire.

abbr, abbreviation, abbreviated.

ABC, absolute basophil count.

ABC, absolute bone conduction.

ABC, acalculous biliary colic.

ABC, acid balance control.

ABC, aconite-belladonna-chloroform.

ABC, advanced breast cancer.

ABC, airway, breathing, and circulation.

ABC, alignment, blue, calcium (synovial fluid pearls in gout and pseudogout).

ABC, alternative birth center.

ABC, alum, blood, and charcoal (purification and deodorizing method).

ABC, alum, blood, and clay (sludge deodorizing method).

ABC, American Blood Commission.

ABC, aneurysmal bone cyst.

ABC, antigen-binding capacity.

ABC, apnea, bradycardia, cyanosis.

ABC, aspiration biopsy cytology.

ABC, aspiration needle biopsy.

ABC, assessment of basic competency.

ABC, atomic, biological, and chemical (warfare).

Abc, autoantibodies to collagen.

ABC, avidin-biotin complex.

ABC, axiobuccocervical.

ABCC, Atomic Bomb Casualty Commission.

ABCD, airway, breathing, circulation, differential diagnosis (or defibrillate) - in cardiopulmonary resuscitation.

ABCD, asymmetry, borders irregular, color variegated, diameter > 6 mm (assessment of melanoma).

ABCDE, airway, breathing, circulation, disability, exposure/environmental control - trauma protocol.

ABCDE, botulism toxin pentavalent.

ABCDEFGH, air ways, bones, cardiac shadow, diaphragm, effusions, fields (pulmonary), gastric, hardware (chest X-ray reading mnemonic).

ABCDES, abnormal alignment, bones-periarticular osteoporosis, cartilage joint space loss, deformities, marginal erosions, soft tissue swelling (x-ray features in rheumatoid arthritis).

ABCDES, adjust medication, bacterial prophylaxis, cervical spine disease, deep vein thrombosis prophylaxis, evaluate extent and activity of disease, stress-dose steroid coverage.

Abd, (abdere) abdomen.

Abd, abdominal.

Abd, abduction.

ABE, acetone-butanol-ethanol.

ABE, acid-base equilibrium.

ABE, activity before exercise.

ABE, actual base excess.

ABE, acute bacterial endocarditis.

ABE, acute bacterial exacerbations of chronic bronchitis.

ABE, Adult Basic Education Programs.

ABE, American Board of Endodontics.

ABE, aminobenzoate.

ABE, anode-break excitation.

ABE, antisheep beta-endorphin.

ABE, atypical bronchial epithelium.

Abe, autoantibodies to elastin.

ABE, average bioequivalence.

ABe, Averrhoa bilimbi.

ABE, estradiol bound to albumin.

ABE, trivalent botulinic antitoxin.

ABE-1, a strain of the psychrophilic marine bacterium Vibrio ABE-1.

ABE-I, anion-binding exosite I.

ABE-II, anion-binding exosite II.

Abeta, beta-amyloid (component of Alzheimer's disease plaques).

ABF, alpha-L-arabinofuranosidases.

ABG, arterial blood gases.

ABG, autogenous bone graft.

ABI, ankle to brachial index.

ABJS, Association of Bone and Joint Surgeons (AAOS Specialty Societies).

ABMA, anti-basement membrane antibody disease (Goodpasture’s syndrome).

ABMS, American Board of Medical Specialties.

ABMT, autologous bone marrow transplant.

ABN, abducens nucleus.

AbN, ablation nephropathy.

ABN, Abn, abnormal.

abn, abnormality of a chromosome (e.g.abn 12p).

ABN, active bulimia nervosa (BN).

ABN, acute bacterial nephritis.

ABN, acute brachial neuropathy/neuritis.

ABN, advance beneficiary notices.

ABN, alkali-treated bound niacin.

ABN, anterior BNST lesions (BNST, bed nucleus of the stria terminalis).

AbN, antibody nitrogen.

AbN, antibody to the N terminus (of a protein or peptide).

ABN, arched-back nursing (about laboratory rats).

ABN, artificial background noise.

ABN, aseptic (avascular) bone/bone marrow necrosis.

ABN, Association of British Neurologists.

ABN, endo-1,5-alpha-L-arabinase.

ABN, The Brazilian Academy of Neurology.

Abn-cbd, abnormal cannabidiol.

ABO, blood grouping system.

ABOS, American Board of Orthopaedic Surgery.

ABP, American Board of Pathology.

ABP, American Board of Pediatrics.

ABP, androgen binding protein.

ABPA, allergic bronchopulmonary aspergillosis.

ABPB, abductor pollicis brevis (also APB).

ABPL, abductor pollicis longus (also APL).

ABR, auditory brainstem response audiometry.

ABS, American Back Society.

ABS, arterial blood pressure.

ABTA, American Brain Tumor Association.

ABVD, adriamycin, bleomycin, vinblastine, and dacarbazine (regimen used to treat Hodgkin’s disease).

ABW, actual body weight.

AC, acromioclavicular joint.

AC, air conduction.

AC, alternating current.

ac, ante cenam, before meal/s.

AC/SIUG, ambulatory care special-interest user group.

ACA, adenine-cytosine-adenine codon for threonine.

ACA, American Chiropractic Association.

ACA, Amputee Coalition of America (also: AAOS Related Organizations).

AcAAP, N-acetylaminoantipyrine.

ACC, adenine-cytosine-cytosine codon for serine.

ACC, adenine-cytosine-cytosine codon for threonine.

ACC, American College of Cardiology.

ACC, anodal closure contraction.

ACCME, Accreditation Council for Continuing Medical Education.

Accom., accommodation.

ACCP, American College Of Chest Physicians.

ACCx, anterior cingulate cortex.

ACD, absorbent cover dressing.

ACD, acid-citrate-dextrose.

ACD, allergic contact dermatitis.

ACD, anemia of chronic disease.

ACD, anterior cervical discectomy.

ACD, asymmetrical cortical degeneration syndromes.

ACD, Available Chemical Directory.

ACDF, adult children from dysfunctional family.

ACDF, anterior cervical discectomy and fusion.

ACDM, Association for Clinical Data Management

ACE, angiotensin converting enzyme.

ACEI, angiotensin-converting enzyme inhibitors.

ACF, anterior cervical fusion.

ACFAS, American College of Foot and Ankle Surgeons.

ACG, adenine-cytosine-guanine codon for threonine.

ACG, angiocardiography

ACh, acetylcholine.

AChR, acetylcholine receptor.

ACI, acute coronary insufficiency.

ACILS, American Center for International Labor Solidarity.

ACIP, Advisory Committee on Immunization Practices.

ACJ, acromioclavicular joint (also AC joint).

ACJT, acromioclavicular joint.

ACL, Achievement Check List.

ACL, acromegaloid features, cutis verticis gyrata, corneal leukoma (syndrome).

ACL, anterior clavicular line.

ACL, anterior cruciate ligament.

ACL, anterior cruciate ligament.

ACL, anticardiolipin (antibody).

ACl, aspiryl chloride.

ACLA, American Clinical Laboratory Association

ACLC, Assessment of Children’s Language Comprehension.

ACLD, Association for Children with Learning Disabilities.

ACLF, adult congregate living facility.

ACLI, American Council on Life Insurance.

aCLL, atypical chronic lymphocytic leukemia.

ACLM, American College of Legal Medicine.

ACLPS, Academy of Clinical Laboratory Physicians and Scientists.

ACLR, anterior capsulolabral reconstruction.

ACLS, advanced cardiac life support.

AcLV, avian acute leukemia virus.

ACM, acetaminophen.

ACM, acute cerebrospinal meningitis.

ACM, Adriamycin, cyclophosphamide, methotrexate.

ACM, albumin-calcium-magnesium.

ACM, alveolar capillary membrane.

ACM, anticardiac myosin.

ACM, Arnold-Chiari malformation.

ACMA, American Occupational Medical Association.

ACMC, Association of Canadian Medical Colleges.

ACMD, associate chief medical director.

ACME, Advisory Council on Medical Education.

ACME, Automated Classification of Medical Entities.

ACMF, arachnoid cyst of the middle fossa.

ACMI, American College of Medical Informatics.

ACML, atypical chronic myeloid leukemia.

ACMP, alveolar-capillary membrane permeability.

ACMR, Advisory Committee on Medical Research.

ACMS, American Chinese Medical Society.

ACMSF, Advisory Committee on the Microbiological Safety of Food (UK).

ACMT, artificial circus movement tachycardia.

ACMV, assist-controlled mechanical ventilation.

ACN, acute conditioned neurosis ventilation.

ACN, Ambulatory Care Network ventilation.

ACN, American College of Neuropsychiatrists ventilation.

ACN, American College of Nutrition.

ACNM, American College of Nuclear Medicine Nutrition.

ACNM, American College of Nurse-Midwives.

ACNP, acute care nurse practitioner Midwives.

ACNP, American College of Nuclear Physicians.

ACO, acute coronary occlusion.

ACO, alert, cooperative, oriented.

ACO, anodal closure odor.

ACOA, adult children of alcoholics.

ACoA, anterior communicating artery.

ACOAs, collegiate adult children of alcoholics.

ACOEM, American College of Occupational and Environmental Medicine.

ACOEP, American College of Osteopathic Emergency Physicians.

ACOG, American College of Obstetricians and Gynecologists.

ACOHA, American College of Osteopathic Hospital Administrators.

ACO-HNS, American Council of Otolaryngology-Head and Neck Surgery.

ACOI, American College of Osteopathic Internists.

ACOM, American College of Occupational Medicine.

ACOM, anterior communicating (artery).

AComA, anterior communicating artery.

ACOMS, American College of Oral and Maxillofacial Surgeons.

ACOOG, American College of Osteopathic Obstetricians and Gynecologists.

ACOP, American College of Osteopathic Pediatricians.

ACOP, approved code of practice.

ACORDE, A Corsortium on Restorative Dentistry Education.

ACOS, American College of Osteopathic Surgeons

ACOS, American College of Osteopathic Surgeons.

ACOS, associate chief of staff.

ACOS/AC, associate chief of staff for ambulatory care.

Acous, acoustics, acoustic.

ACP, accessory conduction pathway.

ACP, acetone powder.

ACP, acid phosphatase.

AcP, acid phosphatase.

ACP, acyl carrier protein.

ACP, American College of Pathologists.

ACP, American College of Pharmacists.

ACP, American College of Physicians.

ACP, American College of Prosthodontists.

ACP, American College of Psychiatrists.

ACPA, American Cleft Palate Association.

ACPC, aminocyclopentane carboxylic (acid).

ACPE, American College of Physician Executives.

AC-PH, ac phos acid phosphatase.

ACPM, American College of Preventive Medicine.

ACPOC, Association of Children's Prosthetic-Orthotic Clinics (AAOS Specialty Societies).

ACPP, adrenocortical polypeptide.

ACPP, prostate-specific acid phosphatase.

ACPS, acrocephalopolysyndactyly.

ACR, abnormally contracting region.

ACR, absolute catabolic rate.

ACR, acriflavine.

Acr, acrylic.

ACR, adenomatosis of colon and rectum.

ACR, adjusted community rate.

ACR, ambulance call report.

ACR, American College of Radiology.

ACR, American College of Rheumatology.

ACR, anticonstipation regimen.

ACR, axillary count rate.

ACRF, ambulatory care research facility.

ACRI, Africa Crisis Response Initiative.

ACRM, American Congress on Rehabilitation Medicine.

ACRPI, Association of Clinical Research for the Pharmaceutical Industry.

ACS , acute cervical strain; acute cervical sprain.

ACS, acrocallosal syndrome.

ACS, acrocephalosyndactyly.

ACS, acute chest syndrome.

ACS, acute confusional state.

ACS, Alcon Closure System.

ACS, American Cancer Society.

ACS, American Chemical Society.

ACS, American College of Surgeons.

ACS, anodal closure sound.

ACS, antireticular cytotoxic serum.

ACS, aperture current setting.

ACS, Association of Clinical Scientists

ACSA, adenylate cyclase-stimulating activity.

ACSE, association control service element.

ACSF, artificial cerebrospinal fluid.

ACSM, American College of Sports Medicine.

ACSP, adenylate cyclase-stimulating protein.

ACSP, Australian College of Sports Physicians.

ACSV, aortocoronary saphenous vein.

ACSVBG, aortocoronary saphenous vein bypass graft.

AcT, acceleration time.

ACT, achievement through counseling and treatment.

ACT, actin.

ACT, actinomycin.

act, actinomycin.

ACT, activated clotting time.

ACT, active motion.

act, activity, active.

ACT, advanced coronary treatment.

ACT, anterocolic transposition.

ACT, antichymotrypsin.

ACT, anticoagulant therapy.

ACT, anxiety control training.

ACT, asthma care training.

ACT, atropine coma therapy.

ACTA, American Cardiology Technologists Association.

ACTA, automatic computerized transverse axial (scanning).

Act-C, actinomycin C.

Act-D, actinomycin D.

ACTe, anodal closure tetanus.

ACTG, AIDS Clinical Trial Group.

ACTH, adrenocorticotropic hormone, secreted by pituitary gland, which strongly stimulates the release of cortisol from adrenal cortex.

ACTH-LI, adrenocorticotropin-like immunoreactivity.

ACTHR, adrenocorticotropic hormone receptor.

ACTS, acute cervical trauma syndrome.

ACTZ, acetazolamide.

ACU, adenine-cytosine-uracil codon for threonine.

ACVB, aortocoronary venous bypass.

ACVD, acute cardiovascular disease.

ACVD, arteriosclerotic cardiovascular disease.

ad lib, at liberty, as desired.

AD, Action for Democracy.

AD, admission and discharge.

AD, admitting diagnosis.

AD, adult disease.

AD, alternating days.

AD, Alzheimer’s disease.

AD, atopic dermatitis.

AD, auris dextra (right ear).

ADA, American Dental Association.

ADA, American Diabetes Association.

ADA, anterior descending artery.

ADADS, Alcohol and Drug Abuse Data System.

ADAS-Cog, Alzheimer’s Disease Assessment Scale-Cognitive Subscale.

ADASP, Association of Directors of Anatomic and Surgical Pathology.

ADC, AIDS dementia complex.

ADCC, antibody-dependent cell-mediated cytotoxicity.

ADD, addiction.

ADD, adduct; adduction.

ADD, attention deficit disorder.

ADD, average daily dose.

ADEA, American Dental Education Association.

ADEA, Association for the Development of Education in Africa.

ADEM, acute disseminated encephalomyelitis/encephalopathy.

adeno-Ca, adenocarcinoma.

ADF, acid detergent fiber.

ADF, actin depolymerizing factor.

ADG, average daily gain.

ADH, antidiuretic hormone, called also vasopressin.

ADH, atypical ductal hyperplasia.

ADHD, attention deficit hyperactivity disorder.

ADI, acceptable daily intake.

ADJ, adjacent.

ADJ, adjoining.

ADJ, adjunct.

ADJ, adjust.

ADJ, adjuvant chemotherapy.

ADL, activities of daily living.

ADM scale, Acceptance of Disability Scale Modified.

ADM, abductor digiti minimi.

ADM, Academy of Dental Materials.

ADM, acellular dermal matrix.

ADM, acetone dry mass.

ADM, acetone-dissolution method.

ADM, acquired dermal melanocytosis.

ADM, action description resolution.

ADM, adamantane.

ADM, adaptive decision making.

ADM, adenomyomatosis.

ADM, adhesion molecules.

adm, administered.

ADM, administration.

ADM, administrative medicine.

ADM, admission/admitted.

ADM, adrenal medulla.

ADM, adrenodemedullated.

ADM, adrenomedullin.

ADM, adriamycin.

ADM, adult onset diabetes mellitus.

ADM, advancement of the mandible.

ADM, Aide au Diagnostic Medical (database).

adm, air dry mass.

ADM, Alcohol, Drug Abuse and Mental Health (grant of US Department of Health and Human Services).

ADM, alcohol, drug, and mental disorders.

ADM, allogeneic dermal matrix.

ADM, aminopyrine-N-demethylase.

ADM, amyopathic dermatomyositis.

ADM, angular dependence model

ADM, anisodamine.

ADM, anterior deep masseter.

ADM, antroduodenal manometry.

ADM, aperture-defined microvolume.

ADM, appraisal-disruption model.

ADM, arginine-deficient medium.

ADM, armadillo-derived mycobacteria.

ADM, aspergillus differential medium.

ADM, atypical diabetes mellitus.

ADM, auditory dominance model.

ADM, average distance map.

ADP, abductor pollicis.

ADP, adenosine diphosphate.

ADP, Agricultural Development Program.

ADR, adverse drug reaction.

Adria, Adriamycin, trade name for doxorubicin.

ADS, anterior dynamized system (produced by: Abbott Labs).

ADT, admission-discharge-transfer.

ADV, advised.

ADV, arterial deep venous.

ADV, Aujeszky's Disease Virus.

AE, above the elbow.

AE, active and equal.

AE, adverse event.

AEA, Asociación Española de Artroscopia (Spanish Arthroscopy Association - only Spanish).

AEA, auricular electroacupuncture.

AEB, as evidenced by.

AEC, 5-amino 9 ethyl carbazol.

AED, antiepileptic drug.

AED, automated external defibrillator.

AEEC, attaching and effacing Escherichia coli.

AEH, atypical endometrial hyperplasia.

AEI, acetyleethyleneimine.

AER, auditory evoked response.

AER, average evoked response.

AERC, African Economic Research Consortium.

AET, 2-aminoethylisothiouronium bromide hydrobromide.

AF, adult female.

AF, amniotic fluid.

AF, aortic flow.

AF, atrial fibrillation.

AF, atrial flutter.

AFB, acid fast bacillus.

AFB1, aflatoxin B1.

AFB2a, aflatoxin B2a.

AFC, amniotic fluid cortisol.

AFC/MSC, ratio of amniotic fluid cortisol and maternal serum cortisol.

aFGF, acidic fibroblast growth factor.

Afib, atrial fibrillation.

AFIP, Armed Forces Institute of Pathology.

AFL, aflatoxicol.

AFL, artificial limb.

AFL, atrial flutter.

AFLM1, aflatoxicol M1.

AFLP, acute fatty liver of pregnancy.

AFM, atomic force microscope.

AFNOR, French Standardisation Institut.

AFO, ankle-foot orthoses.

AFP, acute flaccid paralysis.

AFP, alpha-fetoprotein (expressed by germ cell tumors and other cancers).

AFSI , Africa Food Security Initiative .

AFTR, atrophy, fasciculation, tremor, rigidity.

AFX, atypical fibroxanthoma.

AG, anion gap.

AGA, adenine-guanine-adenine codon for arginine.

AGA, appropriate-for-gestational age.

AGCT, adult granulosa cell tumour.

AGF, angle of greatest flexion.

AGG , aggravation.

AGG, adenine-guanine-guanine codon for arginine.

AGI, Academy for Guided Imagery.

AGL, acute granulocytic leukemia.

AGN, acute glomerulonephritis.

AGTT, abnormal glucose tolerance test.

AGU, adenine-guanine-uracil codon for serine.

AGUS, atypical glands of unknown significance.

AH, abdominal hysterectomy.

AH, arterial hypertension.

AHA, American Heart Association.

AHA, American Hospital Association.

AHB, alpha-hydroxybutyric acid.

AHC, academic health care.

AHC, academic health center.

AHC, acute hemorrhagic conjunctivitis.

AHC, acute hemorrhagic cystitis.

AHC, amygdalohippocampal complexes.

AHC, antihemophilic factor C.

AHCA, Agency for Health Care Administration.

AHCA, American Health Care Association.

AHCD, acquired hepatocellular degeneration.

AHCPR, Agency for Health Care Policy and Research.

AHCy, adenosyl homocysteine.

AHD, acquired hepatocerebral degeneration.

AHD, acute heart disease.

AHD, antihyaluronidase.

AHD, antihypertensive drug.

AHD, arterio-hepatic dysplasia.

AHD, atherosclerotic heart disease.

AHD, autoimmune hemolytic disease.

AHDMS, automated hospital data management system.

AHDP, azacycloheptane diphosphonate.

AHDS, Allan-Herndon-Dudley syndrome.

AHE, acute hazardous events (database).

AHE, acute hemorrhagic encephalomyelitis.

AHEA, area health education activity.

AHEC, area health education center.

AHES, artificial heart energy system.

AHF, acute heart failure.

AHF, American Health Foundation.

AHF, American Hepatic Foundation.

AHF, American Hospital Formulary.

AHF, antihemophilic factor.

AHF, Argentinian hemorrhagic fever.

AHF, Associated Health Foundation.

AHFS, American Hospital Formulary Service.

AHG, aggregated human globulin.

AHG, antihemophilic globulin factor.

AHG, antihemophilic globulin.

AHG, antihuman globulin.

AHGG, aggregated human gammaglobulin.

AHGG, antihuman gammaglobulin.

AHGS, acute herpetic gingival stomatitis.

AHH, alpha-hydrazine analog of histidine.

AHH, anosmia and hypogonadotropic hypogonadism (syndrome).

AHH, arylhydrocarbon hydroxylase.

AHH, Association for Holistic Health.

AHI, active hostility index.

AHI, Animal Health Institute.

AHI, apnea-plus-hypopnea index.

AHIMA, American Health Information Management Association.

AHIMA, American Health Information Management Association.

AHIP, assisted health insurance plan.

AHIS, automated hospital information system.

AHJ, artificial hip joint.

AHL, acquired hypertrichosis lanuginosa.

AHL, acute hemorrhagic leukoencephalitis.

AHL, apparent half-life.

AHLE, acute hemorrhagic leukoencephalitis.

AHLG, antihuman lymphocyte globulin.

AHLS, antihuman lymphocyte serum.

AHM, Allied health manpower.

AHM, ambulatory Holter monitor.

AHMA, American Holistic Medicine Association.

AHMA, antiheart muscle autoantibody.

AHMC, Association of Hospital Management Committees.

AHN, Army Head Nurse.

AHN, assistant head nurse.

AHNMD, associated clonal hematopoietic non-mast cell lineage disorder.

AHO, Albright hereditary osteodystrophy.

AHP, accountable health plan or partnership.

AHP, acute hemorrhagic pancreatitis.

AHP, after hyperpolarization.

AHP, air at high pressure.

AHP, analytic hierarchy process.

AHP, approved health plan.

AHP, Assistant House Physician.

AHPA, American Health Planning Association.

AHPO, anterior hypothalamic preoptic (area).

AHR, antihyaluronidase reaction.

AHR, Association for Health Records.

AHR, atrial heart rate.

AHRA, American Hospital Radiology Administration.

AHRF, acute hypoxemic respiratory failure.

AHRF, American Hearing Research Foundation.

AHRQ, Agency for Healthcare Research and Quality.

AHS, Academy of Health Sciences.

AHS, African horse sickness.

AHS, alveolar hypoventilation syndrome.

AHS, American Hearing Society.

AHS, American Hospital Society.

AHS, area health service.

AHS, assistant house surgeon.

AHSA, American Health Security Act.

AHSCT, autologous hematopoietic stem cell transplantation.

AHSDF, area health service development fund.

AHSG, alpha-2HS-glycoprotein.

AHSN, Assembly of Hospital Schools of Nursing.

AHSP, AIDS Health Services Program (of the Robert Wood Johnson Foundation).

AHSR, Association for Health Services Research.

AHT, aggregation half time.

AHT, antihyaluronidase titer.

AHT, arterial hypertension.

AHT, augmented histamine test.

AHT, autogenous hamster tumor.

AHTG, antihuman thymocyte globulin.

AHTP, antihuman thymocyte plasma.

AHTS, antihuman thymus serum.

AHU, acute hemolytic uremic (syndrome).

AHU, arginine, hypoxanthine, and uracil.

AHuG, aggregated human IgG.

AHV, avian herpes virus.

AI, accidental injury.

AI, accidentally incurred.

aI, active ingredient.

AI, adiposity index.

AI, aggregation index.

AI, allergy and immunology.

AI, amylogenesis imperfecta.

AI, anaphylatoxin inactivator.

AI, angiogenesis inhibitor.

AI, angiotensin I.

AI, anxiety index.

AI, aortic incompetence.

AI, aortic insufficiency.

AI, apical impulse.

AI, articulation index.

AI, artificial insemination.

AI, artificial intelligence.

AI, atherogenic index.

AI, atrial insufficiency.

AI, autoimmune, autoimmunity.

AI, axio-incisal.

AI, first meiotic anaphase..

AI/COAG, artificial intelligence hemostasis consultant system.

AIA, allylisopropylacetamide.

AIA, amylase inhibitor activity.

AIA, anti-immunoglobulin antibody.

AIA, anti-insulin antibody.

AIA, aspirin-induced asthma.

AIA, automated image analysis.

AIB, aminoisobutyrate.

AIB, avian infectious bronchitis.

AIBA, aminoisobutyric acid.

AIBS, American Institute of Biological Sciences.

AIC, Akaike’s information criterion (a goodness-of-fit measure).

AIC, aminoimidazole carboxamide.

AIC, Association des Infirmières Canadiennes.

A-IC, average integrated concentration.

AICA, anterior inferior cerebellar artery.

AICA, anterior inferior communicating artery.

AI-CAH, autoimmune-type chronic active hepatitis.

AICAR, aminoimidazole carboxamide ribonucleotide.

AICD, automatic implantable cardioverter defibrillator.

AICE, angiotensin I converting enzyme.

AICF, autoimmune complement fixation.

AID, acquired immunodeficiency disease.

AID, acute infectious disease.

AID, acute ionization detector.

AID, Agency for International Development.

AID, argon ionization detector.

AID, artificial insemination by donor.

AID, autoimmune deficiency.

AID, autoimmune disease.

AID, automatic implantable defibrillator.

AID, average interocular difference.

AIDP, acute inflammatory demyelinating polyradiculoneuropathy.

AIDS, acquired immunodeficiency syndrome.

AIDSDRUGS, clinical trials of acquired immunodeficiency drugs.

AIDS-KS, acquired immune deficiency syndrome with Kaposi’s sarcoma.

AIDSLINE, on-line information on acquired immunodeficiency syndrome.

AIDS-OI, AIDS with opportunistic infections.

AIDSTRIALS, clinical trials of acquired immunodeficiency syndrome drugs.

AIIS, anterior inferior iliac spine.

AIL, angioimmunoblastic lymphadenopathy.

AIMBE, American Institute for Medical and Biological Engineering.

AIN, anterior interosseous nerve.

Aind, indicative dosage.

AIOD, Association Internationale pour l'Ostéosynthèse Dynamique.

AIOM, Italian Association for Medical Oncology.

AION, anterior ischemic optic neuropathy.

AIOSM, American Institute of Orthopaedic and Sports Medicine.

AIP, acute interstitial pneumonia (Hamman-Rich disease).

AIRO, Associazione Italiana di Radioterapia Oncologica.

AIS, adenocarcinoma in situ.

AIS, adolescent idiopathic scoliosis.

AIT, acute intensive treatment.

AJ, ankle jerk.

AJAO, American Juvenile Arthritis Organization.

AJCC, American Joint Committee on Cancer.

AJKS, American Journal of Knee Surgery.

AJNR, American Journal of Neuroradiology.

AJO, American Journal of Orthopaedics.

AJR, abdominojugular reflux maneuver.

AJR, accelerated junctional rhythm.

AJR, albumin-deficient and jaundiced strain of rats.

AK, above knee.

AK, above the knee (amputation).

AKA, above knee amputation.

AKA, also known as.

AKS, American Knee Society.

AL, idiopathic (primary) amyloidosis.

AL, left ear.

Al, porous alumni.

Ala, alanine.

ALAT, alanine aminotransferase / alanine transaminase.

ALB, albendazole.

ALC, anaplastic large cell.

ALC, approximate lethal concentration.

ALD, alcoholic liver disease.

ALIP, atypical localization of immature precursors.

alk phos, alkaline phosphatase.

ALK, anaplastic lymphoma kinase.

ALK, automated lamellar keratoplasty.

ALL , acute lymphoblastic leukemia.

ALL, allergy.

AlloSCT, allogeneic stem-cell transplantation.

ALMI, anterior lateral myocardial infarction.

ALP, alkaline phosphatase.

alpha 2,6-ST, alpha 2,6 sialyltransferase.

alpha-MPT, alpha-methyl-p-tyrosine.

alpha-T7, transgenic line of mice.

ALRI, antero-lateral rotatory instability.

ALS , acute lumbar strain.

ALS, advanced life support.

ALS, amyotrophic lateral sclerosis.

ALS, anterolateral sclerosis.

alt hor, alternate hours/every other hour.

ALT, alanine aminotransferase (formerly SGPT).

ALT, alternate.

ALT, altitude.

Alt, aluminum tartrate.

ALT, argon laser trabeculoplasty.

ALT, autolymphocyte therapy.

ALT, avian laryngotracheitis

ALTB, acute laryngotracheobronchitis.

ALTE, acute life-threatening event.

ALTEE, acetyl-L-tyrosine ethyl ester.

ALTS, acute lumbar trauma syndrome.

ALVF, acute left ventricular failure.

AM, adult male.

AM, aerospace medicine.

AM, alveolar macrophages.

AM, anteromedial.

AM, before noon.

AMA, against medical advice.

AMA, American Medical Association.

AMAN, acute motor axonal neuropathy.

AMB, ambulate; ambulatory.

AMD, acid maltase deficiency.

AMD, acromandibular dysplasia.

AMD, actinomycyn d.

AMD, adrenomyelodystrophy.

AMD, age-related macular degeneration.

AMD, air monitoring device.

AMD, aleutian mink disease.

AMD, alpha-methyldopa.

AMD, amantadine.

AMD, Association for Macular Diseases.

AMD, axiomesiodistal.

AMD, s-adenosylmethionine decarboxylase.

AMDF, American Macular Degeneration Foundation.

AMG, acceleromyography.

AMG, ?2-macroglobulin.

AMI, acute myocardial infarction.

AMIA, American Medical Informatics Association.

AML, acute myeloblastic leukemia.

AMM&M, agnogenic myeloid metaplasia with myelofibrosis.

AMM, agnogenic myeloid metaplasia.

amp, ampere.

AMP, amphetamine.

AMP, amputation.

AMS, American Medical Systems Inc..

AMS, Amsterdam.

AMS, aseptic meningitis syndrome.

AMSAN, acute motor sensory axonal neuropathy.

AMSSM, American Medical Society for Sports Medicine.

amt, amount.

AMV, alfalfa mosaic virus.

AMV, anterior medullary velum.

AMV, apical membrane vesicles (about lung).

AMV-RT, avian myeloblastosis virus reverse transcriptase.

AMY2, alpha-amylase 2.

AN69-S, Biospal.

ANA, anesthesia.

ANA, antinuclear antibody test (see also FANA).

ANAL, analgesic.

ANC, absolute neutrophil count.

ANCA, antineutrophil cytoplasmic antibodies.

AND, algoneurodystrophy.

AND, anterior nasal discharge.

ANED, alive no evidence of disease.

ANES, anesthesia.

ANG, angle.

ANHE, acute necrotizing hemorrhagic encephalopathy.

ANI, acute nerve irritation.

ANLL, acute non-lymphocytic leukemia.

ANO, amiodarone neuropathy of the optic nerve.

ANOVA, analysis of variance.

ANP, atrial natriuretic peptide.

ANPs, advanced nurse practitioners'.

ANRF, Arthritis National Research Foundation.

ANRI, acute nerve root irritation.

ANS, autonomic nervous system.

ANSI, American National Standards Institute.

ANT, anterior.

anti-OJ, anti-isoleucyl-tRNA synthetase.

ANX, anxiety.

AO ASIF, AO (Arbeitsgemeinschaft fuer Osteosynthesefragen) Association of the Study of Internal Fixation.

AO, angle of.

AO, aorta.

AO, Arbeitsgemeinschaft fuer Osteosynthesefragen.

AO, inbred strains of rats [AO(RT1u/AgB2)].

AOA, American Orthopaedic Association (also: AAOS Related Organizations).

AOA, American Osteopathic Association.

AOA, Asian Orthopaedic Association.

AOA, Australian Orthopaedic Association.

AOAC, Association of Official Analytical Chemist.

AOB, Abteilung für Orthopädische Biomechanik (Orthopaedic Biomechanics Division).

AOB, alcohol on breath.

AOD, arteriosclerotic occlusive disease.

AODA, alcohol and other drugs of abuse.

AODM, adult onset diabetes mellitus.

AOFAS, American Orthopaedic Foot and Ankle Society (also: AAOS Related Organizations).

AOI, AO (Arbeitsgemeinschaft fuer Osteosynthesefragen) International.

AOLF, Association des Orthopédistes de Langue Française.

AOM, acute otitis media.

AOPA, American Orthotic and Prosthetic Association.

AOQ, l'Association d'Orthopédie du Québec.

AORFA, American Orthopaedic Rugby Football Association.

AORN, Association of Perioperative Registered Nurses.

AOS, Academic Orthopaedic Society (also: AAOS Specialty Societies).

AOS, Alaska Orthopaedic Society.

AOS, Arizona Orthopaedic Society.

AOSSM, American Orthopaedic Society for Sports Medicine (Journal) (also: AAOS Related Organizations).

AOx4, alert and oriented in 4 questions asked in evaluation of metal status.

AP & L, anteroposterior and lateral.

AP, (Lat. ante partum) before delivery.

AP, access permit.

AP, accessory pathway.

AP, accounts payable.

AP, acid phosphatase.

AP, acinar parenchyma.

AP, action potential.

AP, active pepsin.

AP, acute pancreatitis.

Ap, acute phase.

AP, acute pneumonia.

AP, acute proliferative.

AP, adenomatous polyposis.

AP, adolescent psychiatry.

AP, aerosol pentamidine.

AP, after parturition.

AP, alkaline phosphatase.

AP, alum precipitated.

AP, aminopeptidase.

Ap, aminopurine.

AP, amyloid p-component.

AP, angina pectoris.

AP, anterior pituitary.

AP, anteroposterior (view in X-rays).

AP, antidromic potential.

Ap, antipyrine.

AP, antral peristalsis.

AP, aortic pressure.

AP, aortopulmonary.

Ap, apex.

AP, apical pulse.

AP, apothecary.

AP, appendectomy.

AP, appendicitis; appendix.

AP, apurinic acid.

AP, area postrema.

AP, arithmetic progression.

AP, arterial pressure.

AP, artificial pneumothorax.

AP, aspiration pneumonia.

Ap, assessment and plans.

AP, association period.

AP, atherosclerotic plaque.

AP, atrial pacing.

AP, atrioventricular pathway.

ap, attachment point.

AP, Australian pharmacist.

AP, axiopulpal.

ap, before dinner.

AP, BNP, brain natriuretic peptide.

APA, Abrus precatorius agglutinin.

APA, American Paralysis Association.

APA, American Psychiatric Association.

APAAP, alkaline phosphatase anti-alkaline phosphatase.

APACHE, acral pseudolymphomatous angiokeratoma of childhood.

APAP, acetaminophen (paracetamol).

APB, abductor pollicis brevis (also ABPB).

APB, atrial premature beat.

APC, activated protein C.

APC, allophycocyanin.

APC, Ambulatory Patient Classification.

APC, anterior polar cataract.

APC, antero-posterior compression.

APC, antigen presenting cells.

APC, Argon Plasma Coagulation.

APC, aspirin, phenacetin, caffeine.

APCI, atmosphere pressure chemical ionization.

APF, assigned protection factor.

APH, anterior pituitary hormone.

APH, aphasia.

APHIS, USDA's Animal and Plant Health Inspection Service.

API, Association for Pathology Informatics.

APL, abductor pollicis longus (also ABPL).

APLAR, Asian Pacific League of Association for Rheumatology.

APLS, advanced pediatric life support.

APM, apomorphine.

APMA, American Podiatric Medical Association.

ApMV, apple mosaic virus.

APP, Alzheimer amyloid precursor protein.

APP, appears.

APP, appendix.

APP, appointment.

APP, approximate.

ApPC, anthrylvinyl-labeled phosphatidylcholine.

APPC, aorto-pericardial pouch conduit.

APPC, apalcillin.

APPC, apoptotic cells.

APPc, cytoplasmic tail of the amyloid precursor protein.

APPC, knee arthroplasty with polyethylene patellar components.

APPC, p-aminophenylphosphorylcholine.

APTA, American Physical Therapy Association.

APTT, automated partial thromboplastin time.

APUD, amine precursor uptake and decarboxylation.

APVOD, arteriosclerotic peripheral vascular occlusive disease.

APX, ascorbate peroxidase.

AQ, aq., water.

AQL, acceptance quality level.

AR, active resistance.

AR, admitting room.

AR, apical rate.

AR, artificial respiration.

AR, assessment report.

AR, assisted respiration.

AR, at risk.

ARA-C, cytarabine.

ARC, AIDS related complex.

ARD, acute respiratory disease.

ARD, atheroembolic renal disease.

ARDS, acute/adult respiratory distress syndrome.

ARE, active-resistance exercise.

ARF, acute renal failure.

ARF, acute respiratory failure.

ARF, acute rheumatic fever.

Arg, arginine.

ARI, anxiety reaction, intense.

ARIC, Atherosclerosis Risk in Communities.

ARM, anxiety reaction, mild.

ARNP, Advanced Registered Nurse Practitioner.

AROM, active range of motion.

AROM, artificial rupture of membranes.

ARP, American Registry of Pathology.

ARP, American Registry of Pathology.

ARRT, American Registry of Radiologic Technologists.

ART, absolute retention time (chromatography).

ART, Achilles' tendon reflex test.

ART, artery.

ART, articulation.

ART, artificial.

ARTH, arthritic.

ARVD, arrythmogenic right ventricular dysplasia.

AS ankylosing spondylitis.

as to, as tolerated.

AS, alpha-synuclein.

AS, anal sphincter.

AS, aortic stenosis.

AS, arteriosclerosis.

AS, auris sinistra (left ear).

ASA, acetylsalicylic acid (aspirin).

ASA, American Society of Anesthesiologists.

ASAMI, Association for the Study and Application of the Ilizarov Method.

ASAP, as soon as possible.

ASB, American Society of Biomechanics.

ASBME, Associated Students of Biomedical Engineering.

ASBMR, Austrian Society for Bone and Mineral Research (EFFO Member Society).

ASC, arteriosclerosis.

ASC, ascending.

ASCAD, arteriosclerotic coronary artery disease.

ASCO, American Society of Clinical Oncology.

ASCUS, atypical squamous cells of unknown significance.

ASCVD, arteriosclerotic cardiovascular disease.

ASD, atrial septal defect.

ASD, autosensitization spongiotic dermatitis.

ASDP, American Society of Dermatopathology.

ASES, American Shoulder and Elbow Surgeons (also: AAOS Specialty Societies).

ASF, African Swine Fever.

ASF, anterior spinal fusion.

ASH, American Society of Hematology.

ASH, asymmetrical septal hypertrophy.

ASHD, arteriosclerotic heart disease.

ASHD, atherosclerotic heart disease.

ASHNR, American Society of Head and Neck Radiology.

ASI, specific immunotherapy.

ASIA, American Spinal Injury Association (AAOS Related Organizations).

ASIC, application specific integrated circuit.

ASIS, anterior superior iliac spine.

ASM, aggressive systemic mastocytosis.

ASM, American Society for Microbiology.

ASMI, American Sports Medicine Institute.

Asn, asparagine.

ASNR, American Society of Neuroradiology.

ASO, Amplatzer septal occluder.

ASO, antisense oligonucleotides.

ASO, antistreptolysin-O.

ASO, arteriosclerosis obliterans.

ASOPA, American Society of Orthopaedic Physician's Assistants (also: AAOS Specialty Societies).

ASOS, Australian Society of Orthopaedic Surgeons.

Asp, aspartic acid.

ASPC, aspoxicillin.

ASPNR, American Society of Pediatric Neuroradiology.

ASPRS, American Society of Plastic and Reconstructive Surgeons.

ASPVD, arteriosclerotic peripheral vascular disease

ASR, age standardized rate (incidence).

ASRT, American Society of Radiologic Technologists.

, amyloid beta-peptides.

ASS, anterior superior spine.

ASSH, American Society for Surgery of the Hand (also: AAOS Related Organizations).

assist., assistive.

ASSR, American Society of Spine Radiology.

ASSV, apple scar skin viroid.

AST, all subjects treated.

AST, alternate-site-testing.

AST, antimicrobial susceptibility testing.

AST, aspartate aminotransferase (formerly SGOT).

AST, Association of Surgical Technologists.

AST, astigmatism.

Astigm., astigmatism.

ASTM, american standard test method.

ASTRO, American Society for Therapeutic Radiology and Oncology.

ASU, ambulatory surgery unit.

at bed time, hs.

AT, achilles tendon.

AT, anterior tibial.

AT, athletic trainer.

AT, atlas.

at, vol atomic volume.

at, wt atomic weight.

AT/NC, atraumatic, normocephalic.

ATF, amino-terminal fragment.

ATL, adult T-cell leukemia/lymphoma.

ATLL, adult T-cell leukemia/lymphoma.

ATLS, advanced trauma life support (training course).

ATN, acute tubular necrosis

ATP, attending physician.

ATP, autoimmune thrombocytopenic purpura.

ATPS, ambient temperature and pressure, saturated.

Atr fib, atrial fibrillation.

ATR, Achilles tendon reflex.

ATR, alpha-thalassemia-mental retardation (syndrome).

ATR, atracurium.

ATR, atrazine.

atr, atrophy.

ATR, atrophy.

ATRA, all-trans-retinoic acid (regimen used to treat acute promyelocytic leukemia).

ATRIP, Africa Trade and Investment Program.

ATRX, ATR-X, X-linked alpha-thalassemia mental retardation (syndrome).

ATS, Achard-Thiers syndrome.

ATS, acid test solution.

ATS, alpha-D-tocopherol acid succinate.

ATS, American Thoracic Society.

ATS, American Trauma Society.

ATS, American Trudeau Society.

ATS, antirat thymocyte serum.

ATS, antitetanus serum.

ATS, antithymocyte serum.

ATS, anxiety tension state.

ATS, arteriosclerosis.

ATSDR, Agency for Toxic Substances and Disease Registry.

ATT, arginine tolerance test.

ATT, aspirin tolerance time.

att, attending.

ATV, Abelson virus transformed.

ATV, avian tumor virus.

ATx, adult thymectomy.

atyp, atypical.

ATZ, atypical transformation zone.

Au Ag, Australia antigen.

AU, (auris unitas) both ears.

AU, according to custom ( usum).

AU, allergenic unit.

AU, Angstrom unit.

AU, antitoxin unit.

AU, arbitrary unit.

Au, Australia (antigen).

AU, Australia antigen.

Au, authorization.

AU, azauridine.

Au, gold (Lat.Aurum).

AUA, adenine-uracil-adenine codon for isoleucine.

AUA, American Urological Association.

AUA, asymptomatic urinary abnormalities.

AUB, abnormal uterine bleeding.

AUC, adenine-uracil-cytosine codon for isoleucine.

AUC, area under the curve.

AUD, arthritis of unknown diagnosis.

aud, auditory.

AUDIT, alcohol use disorders identification test.

aud-vis, audiovisual.

AUG, acute ulcerative gingivitis.

AUG, adenine-uracil-guanine codon for methionine.

AUGH, acute upper gastrointestinal hemorrhage.

AuHAA, Australia hepatitis-associated antigen.

AUI, Alcohol Use Inventory.

AUL, acute undifferentiated leukemia.

AUMC, area under the "moment" curve.

AUO, amyloid of unknown origin.

AuP, Australian antigen protein.

AUPHA, Association of University Programs in Health Administration.

aur, auric, auricle, auricular.

AUS, acute urethral syndrome.

AUs, alcohol users.

aus, ausc, auscultation.

AuS, Australia serum hepatitis.

Ausc., auscultation.

AuSH, Australia serum hepatitis.

Auto-PEEP, self-controlled positive end-expiratory pressure.

AUU, adenine-uracil-uracil codon for isoleucine.

AUV, anterior urethral valve.

AUVIB, autotransfusion of UV-irradiated blood.

aux, auxiliary.

aV, abvolt.

AV, Adriamycin and vincristine.

AV, air velocity.

av, air velocity.

AV, allergic vasculitis.

AV, anteroventral.

AV, anteversion.

AV, anticipatory vomiting.

AV, antivirin.

AV, aortic valve.

AV, arteriovenous.

A-V, arteriovenous.

AV, artificial ventilation.

AV, assisted ventilation.

AV, atrioventricular.

A-V, atrioventricular.

AV, audio-visual.

AV, augmented vector.

AV, average.

av, average.

Av, average.

AV, aviation medicine.

AV, avoirdupois.

Av, avoirdupois.

av, avulsion.

AV, avulsion.

AV/AF, anteverted, anteflexed.

Av3V, anteroventral third ventricle.

AVA, activity vector analysis.

AVA, antiviral antibody.

AVA, aortic valve area.

AVA, aortic valve atresia.

AVA, arteriovenous anastomosis.

AVB, atrioventricular block.

AVC, aberrant ventricular conduction.

AVC, Academy of Veterinary Cardiology.

AVC, aortic valve closure.

AVC, Association of Vitamin Chemists.

AVC, associative visual cortex.

AVC, associative visual cortex.

AVC, atrioventricular canal.

AVC, automatic volume control.

AVCN, anteroventral cochlear nucleus.

AVCS, atrioventricular conduction system.

AVCx, atrioventricular circumflex branch.

AVD, aortic valvular disease.

AVD, apparent volume of distribution.

AVD, Army Veterinary Department.

AVD, atrioventricular dissociation.

AVDO2, arteriovenous oxygen saturation difference.

AVDO2B, arteriovenous oxygen saturation difference, basal.

AVDP, average diastolic pressure.

avdp, avoirdupois.

AVE, aortic valve echocardiogram.

ave, aver, average.

AVF, antiviral factor.

AVF, arteriovenous fistula.

aVF, automated volt foot.

aVF, unipolar limb lead on the left leg in electrocardiography.

AVG, ambulatory visit group.

avg, average.

AVG, average.

AVH, acute viral hepatitis.

AVHD, acquired valvular heart disease.

AVHS, acquired valvular heart syndrome.

AVI, air velocity index.

AVI, Association of Veterinary Inspectors.

AVJ, atrioventricular junction.

AVJR, atrioventricular junction rhythm.

AVJRe, atrioventricular junctional reentrant.

aVL, automated volt left.

aVL, unipolar limb lead on the left arm in electrocardiography.

AVLINE, Audiovisuals On-Line (database).

AVM, arteriovenous malformations.

AVM, atrio-ventricular malformations.

AVM, aviation medicine.

AVMA, American Veterinary Medical Association.

AVN, acute vasomotor nephropathy.

AVN, atrioventricular nodal (conduction).

AVN, atrioventricular node.

AVN, avascular necrosis (MRI evaluation).

AVND, atrioventricular node dysfunction.

AVNFH, avascular necrosis of the femoral head.

AVNFRP, atrioventricular node functional refractory period.

AVNR, atrioventricular nodal reentry.

AVNRT, atrioventricular node reentry tachycardia.

AVO, aortic valve opening.

AVO, aortic valve orifice.

AVO, atrioventricular opening.

AVO2, arteriovenous oxygen ratio.

AVP, abnormal vasopressin.

AVP, actinomycin-vincristine-Platinol.

AVP, ambulatory venous pressure.

AVP, antiviral protein.

AVP, aqueous vasopressin.

AVP, arginine—vasopressin.

AVP, arteriovenous passage time.

AVP, vasopressin.

AVPU, alert, verbal, painful, unresponsive (neurologic test).

AVR, accelerated ventricular rhythm.

AVR, antiviral regulator.

AVR, aortic valve replacement.

aVR, automated volt right.

aVR, unipolar limb lead on the right arm in electrocardiography.

AVRI, acute viral respiratory infection.

AVRP, atrioventricular refractory period.

AVRR, antiviral repressor regulator.

AVRT, atrioventricular reentrant tachycardia; atrioventricular reciprocating tachycardia.

AVS, aortic valve stenosis.

AVS, arteriovenous shunt.

AVS, auditory vocal sequencing.

AVSD, atrioventricular septal defect.

AVSV, aortic valve stroke volume.

AVT, Allen vision test.

AVT, arginine vasotocin.

AVT, Aviation Medicine Technician.

AVZ, avascular zone.

AW, able to work.

AW, above waist.

AW, abrupt withdrawal.

aw, airway.

AW, alcohol withdrawal.

AW, alive and well.

AW, alveolar wall.

AW, anterior wall.

AW, atomic warfare.

AW, atomic weight.

aw, water activity.

AWA, animal waste ashes.

AWA, as well as.

AWAR, anterior wall of aortic root.

AWBM, alveolar wall basement membrane.

AW-GC, apatite and wollastonite containing glass-ceramic.

AX, axial: axillary.

AZT, azidothymidine (zidovudine).

AZUR, 6-azauridine.



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