plural noun, 1. The alphabet.
singular noun, 2. The basic facts of a subject.
1. One of the first things preschoolers learn are their ABC's.
2. Using dimensional analysis is considered to be one of the ABC's of analyzing the physical sciences.
by some punk kid September 26, 2005
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"Anything But Caucasian" When a person is sexually attracted to members of non-Caucasian races and ethnicities and is not attracted to Caucasians.
I swear he has ABC tendencies. He'll go out with Asians, Latins, Blacks, etc, but not Caucasians.
by ABCBerger June 30, 2011
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