ABCD
From Wikipedia, the free encyclopedia
ABCD is a list of the first four letters in the English alphabet. It may also refer to:
In medicine:
- ABC (medical), also known as ABCD, a mnemonic for steps in resuscitation
- ABCD rating, a staging system for prostate cancer
- ABCD syndrome, a genetic disorder
- ABCD guideline, a heuristic for detecting melanomas
In science:
- ABCD matrix analysis, a type of ray tracing technique used in the design of some optical systems
- ABCD-parameters, a type of properties describing the electrical behavior of linear electrical networks
In other fields:
- Access to Biological Collections Data, an XML schema for storing and sharing life science specimen data
- CompTIA, also known as the Association of Better Computer Dealers
- ABCD Region, an industrial district outside of São Paulo, Brazil
- American-Born Confused Desi, refers to American youth of South Asian descent.
- ABCD (film), film about growing up in New York as a first or second generation South Asian American
- Asset-Based Community Development, a methodology that seeks to uncover and highlight the strengths within communities
- USS Atlanta, USS Boston, USS Chicago, and USS Dolphin (PG-24), the first four steel ships built during the "New Navy" period of U.S. Naval history