AATA: American Art Therapy Association
AATBS: Association for Advanced Training in Behavioral Sciences
AATS: American Association for Thoracic Surgery
AAV: adeno associated virus
AAVDI: Australasian Association of Veterinary Diagnostic Imaging
AAVLD: American Association of Veterinary Laboratory Diagnosticians
AAVMC: Association of American Veterinary Medical Colleges
AAWD: American Association of Women Dentists
AB: Abortion
Ab: antibody
AB: Associate in Business
AB: Automatic Behavior
Ab's: antibiotics
ABA: American Board of Anesthesiology
ABA: Applied Behavior Analysis
ABA: Association for Behavior Analysis
ABAI: American Board of Allergy & Immunology
ABAM: American Board of Ambulatory Medicine
ABB: American Brotherhood for the Blind
ABC: America's Blood Centers
ABC: aspiration, biopsy, cytology
ABC: Association of Black Cardiologists
ABCD: Association of Biomedical Communications Directors
ABCPD: Alliance for Best Clinical Practices in Dentistry
ABCRS: American Board of Colon and Rectal Surgery
ABCSG: Austrian Breast & Colorectal Cancer Study Group
abd: abdomen
ABD: American Board of Dermatology
ABDA: American Board of Disability Analysts
ABDO: Abdomen
ABDPH: American Board of Dental Public Health
abe: acute bacterial endocarditis
ABE: American Board of Endodontics
ABEA: American Broncho-Esophagological Association
ABEM: American Board of Emergency Medicine
ABFM: American Board of Family Medicine
ABFO: American Board of Forensic Odontology
ABFP: American Board of Family Practice
ABG: arterial blood gas
ABG: arterial blood gases