- (plural in US) the rudiments of a subject
- an alphabetical guide to a subject
- (often plural in US) the alphabet
WordReference Random House Unabridged Dictionary of American English © 2026
ABC
(ā′bē′sē′),USA pronunciation n., pl. ABC's, ABCs.
ABC,
- MilitarySee ABC's (defs. 1, 3).
ABC,
- Abbreviations, Radio and TelevisionAmerican Broadcasting Companies: a television network.
- atomic, biological, and chemical:ABC warfare.
- Advance Booking Charter.
- Alcoholic Beverage Control.
- Abbreviations, Radio and TelevisionAmerican Broadcasting Companies (a television network).
Collins Concise English Dictionary © HarperCollins Publishers::
ABC n
ABC abbreviation for
- Australian Broadcasting Corporation
- American Broadcasting Company
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'ABC' also found in these entries (note: many are not synonyms or translations):
