ABCD

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
• American, British, Chinese, Dutch - the main powers opposing the Empire of Japan prior the Pacific War in WWII

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

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