American Association of Dermatology, one of many important professional societies in the health arena. The AMA (the American Medical Association) is a better known example in the US. Only a small selection of the many health-related organizations is given as a sampler in this DICTIONARY.

Asian Attention Disorder.All asians have this disease when you are heavily focused on a topic and you stray away from it in less than a few seconds.there is no medication for this disease

A not so common term, in common terms meaning "attention attracting disorder". This derives from the ancient meaning of ADD, which stands for "attention deficit disorder& [..]

Australian Government Antarctic Division

See additional authenticated data.

Old. From the Anglo-Saxon eald

Antibiotic-associated diarrhea.

2-amino-1,6-hexanedioic acid;an intermediate of lysine biosynthesis in higher fungi and bacteria, but not in algae and higher plants. Also in degradation of lysine in mammals. Abbreviation: Aad (05 Mar 2000)

Additional Airworthiness Directive.

assigned altitude deviation.

Automatic Activation Device.  A back-up device that initiates deployment of the reserve parachute in emergencies.  Common types include 'Cypres' and 'FXC 1200'.