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n. often ABCs
1. The alphabet: learned her ABCs when she was three years old.
2. The rudiments of reading and writing.
3. The rudiments of a subject: taught the ABCs of geometry.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n. (used with a pl. v.)
1. the alphabet.
2. the basic skills of spelling, reading, and writing.
3. the basic facts, principles, or skills of any subject.Also, ABC (for defs. 1,3).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||ABCs - the elementary stages of any subject (usually plural); "he mastered only the rudiments of geometry"|
basic principle, fundamental principle, fundamentals, basics, bedrock - principles from which other truths can be derived; "first you must learn the fundamentals"; "let's get down to basics"
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