AAD explained

AAD may refer to:

Organizations

Ad Altare Dei, a Boy Scouts of America award
Advanced Automotive Design, a South African car manufacturer
Ardent Leisure, an Australian-based leisure company
AAD Education, Health and Sports (formerly, Athletes Against Drugs), an organization founded by Stedman Graham
American Academy of Dermatology
Australian Antarctic Division, which manages Australia's four Antarctic/sub-Antarctic stations, as well as Heard Island

Science and technology

Average absolute deviation, a measure of absolute deviation and a way to report error against reference data in statistics
Advanced Air defence, an anti-ballistic missile in the Indian Ballistic Missile Defence Programme

Aviation

Automatic activation device, a fail-safe device often used in a parachute pack
Adado Airport, airport serving Adado, Somalia (IATA code: AAD)

Computing

- aad, or "ASCII Adjust before Division", one of the Intel BCD opcodes AAD, the SPARS code for a CD that was recorded analog, mixed analog, and transferred digitally
Additional authenticated data passed to an "Authenticated Encryption with Associated Data" (AEAD) block cipher mode of operation
Microsoft Azure active directory

Medicine

Antibiotic-associated diarrhea
7-Aminoactinomycin D (7-AAD), a fluorescent stain for DNA
Acute aortic dissection, a type of Aortic dissection
Antiarrhythmic drug, another name for antiarrhythmic agent

Other uses

Amal language, a language of Papua New Guinea
Attitude-toward-the-ad models in marketing is a way of measuring the success of an advertisement
Africa Aerospace and Defence, an annual trade show in South Africa

See also