Absolute Dose Intensity - Medicine (RAWO)
Academy of Dentistry International (EA)
Acceptable Daily Intake - Toxicology
Access (Control) Decision Information - Open Systems Interconnection (ODAA)
Accounting Department Instructions
Aciodistoincisal - Medicine (MEDA)
Acoustical Door Institute - Defunct (EA)
Adaptronics, Inc.
Ad-Dome International Ltd. - Vancouver Stock Exchange symbol
Address Incomplete - Telecommunications (TEL)
Ademco Distribution, Inc. (EFIS)
Adi - Language code (ETLW)
Advanced Designs, Inc. - Commercial firm
Advanced Development Implementation (ACAE)
Advanced Discriminating Interceptor - Military technology (DDF)
Advanced Distributed Learning - Computer science
African Development Institute Inc. (RCD)
After Date of Invoice (MIST)
After Develop Inspection (AAEL)
Agence de l'informatique - Information Agency
Aircraft De-Ice and Inhibitor - MTMC (TAG)
Air Decoy Missile (SAUS)
Air Defence Institute (SAUO)
Air Defense Initiative - DoD
Air Defense Institute
Air Defense Intercept - Air Force
Air Distribution Institute (EA)
Alarm Data Interface (SAUS)
Alien Declared Intention
Allied Defense Initiative (ACAE)
Allied Distribution (EA)
Allied Distribution, Inc. (EA)
Allowable Daily Intake - Toxicology
Alternate Digit Inversion - Computer science (IAA)
Alternating Direction Implicit - Algorithm
Alternating Direction Iterative (PDAA)
Altitude Direction Indicator (AFM)
Alzheimer's Disease International (EA)
American Defense Institute (EA)
American Designers Institute (SAUS)
American Directors Institute (EA)
American Documentation Institute - Later, American Society for Information Science
American Dressage Institute
Analog Devices - NYSE symbol (SAG)
Analog Devices, Inc. (SAUS)
Analog Devices Incorporated (SAUO)
Analog Display Indicator (MCD)
Analytic and Design Investigation (SPACE)
Anolog Device Inc. (SAUS)
Antidetonation Injection
Apollo Document Index - NASA (KSC)
Application Data Interchange - Telecommunications (OSI)
Application Directory - Open Systems Interconnection (ODAA)
Applied Dynamics International
Applikon Dependable Instruments
Approved Driving Instructor - British (DBQ)
Aqua-Dyne Co., Sandusky, OH - Manufacturer code for watercraft hull identification number (USCG)
Aquarian Digest International - A publication
Area of Dominant Influence - Mapmaking - Telecommunications
Areas of Dominent Influence (GIS)
Art Dreco Institute (EA)
Assembly Decay Indicator
Assistance Dogs International (EA)
Assistant Director of Intelligence - British military (DMA)
Association for Direct Instruction (EA)
Atlantodens Interval - Neurosurgery and orthopedics (DAVI)
Attitude Direction Indicator - Aerospace
Attitude Director Indicator (PIPO)
Attitude Display Indicator - Aerospace (MCD)
Aubrey Daniels International - Commercial firm
Audeli Air Express - Spain - ICAO designator (FAAC)
Austempered Ductile Iron - Metallurgy
Australian Defence Industries Ltd. (SAUO)
Autism Diagnostic Interview - A diagnostic scale for autism
Autocad Device Interface - Computer science (VERA)
Autodesk Device Interface (SAUS)
AUTODIN-to-DISN Interface (SAUS)
Automatic Data Input (SAUS)
Automatic Derivation of Invariants (MCD)
Automatic Direction Indication (SAUS)
Automatic Direction Indicator (AFM)
Axiodistoincisal - Dentistry
Axiodistoinclusal (SAUS)
Didsbury Public Library, Alberta - Library symbol - National Library of Canada (NLC)
Doyon, AK - Location identifier - FAA (FAAL)
Adiuretin (SAUS)