List of Acronyms and Initialisms: A - AD

AD

• AD – (i) Air Defence – (s) Andorra (ISO 3166 digram) – (i) Anno Domini (Latin, "In the year of our Lord")
• A/D – (i) Analog/Digital
• ADA – (i) Air Defence Artillery – American Dental Association – Assistant District Attorney – Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
• ADAC – (a/i) Allgemeiner Deutscher Automobil-Club (German, "General German Automobile Club")
• ADAGE – (a) Air Defense Air to Ground Engagement (simulation)
• ADAP – (i) AIDS Drug Assistance Program
• ADAS – (a/i) Asiago-DLR Asteroid Survey
• ADAT – (i) Alesis Digital Audio Tape (recording format)
• ADatP – (p) Automated Data Processing
• ADATS – (i) Agricultural Development and Training Society – Air Defence Anti-Tank System – Australian Defence Air Traffic System
• ADB – (i) Asian Development Bank
• ADC – (i) Aide De Camp – U.S. Air Defense Command (1946–1992) – Apple Display Connector – Program Against Digital Counterfeiting of Currency
• ADCTS – (i) Advanced Distributed Combat Training System
• ADD – (i) Analog Digital Digital (CD quality) – Attention-Deficit Disorder – Administration on Developmental Disabilities
• ADDIE – (i) Analyze Design Develop Implement and Evaluate
• ADDNS – (i) Advanced Deployable Day/Night Simulation
• ADF – (i) Australian Defence Force – African Development Foundation
• ADGB – Air Defence of Great Britain
• ADHD – (i) Attention-Deficit Hyperactivity Disorder
• ADHS – (i) Attention-Deficit Hyperactivity Syndrome
• ADI – (i) Acceptable/Allowable Daily Intake
• ADIZ – (a/i) Air Defence Identification Zone
• ADL – (i) Anti-Defamation League
• ad loc. – (p) ad locum (Latin, "to/at the place")
• ADM – (i) Administrative – (s) – Admiral, and the U.S. Public Health Service Commissioned Corps – Archer Daniels Midland – Assistant Deputy Minister
• ADOA – (a/i) Air Defence Operations Area
• ADP – (i) Adenosine DiPhosphate – Army Doctrine Publication (UK, Canada, Australia) – Automatic/Automated Data Processing
• ADRG – (p) Arc-second Raster Chart (ARC) Digitized Raster Graphics
• ADS – (a/i) Active Denial System – Astrophysics Data System – Attention Deficit Syndrome
• ADSR – (i) Attack, Decay, Sustain, Release (sound envelope specification)
• ADT – (i) Atlantic Daylight Time (UTC-3 hours)
• ADTB – (i) Army Doctrine and Training Bulletin
• adv. – (p) adversus (Latin, "against")
• ADW – (i) Air Defence Warning