\ ˌā-(ˌ)bē-ˈsē How to pronounce ABC (audio) \
plural ABC's or ABCs\ ˌā-​(ˌ)bē-​ˈsēz How to pronounce ABCs (audio) \

Definition of ABC

 (Entry 1 of 2)

1 : alphabet usually used in plural
2a : the rudiments of reading, writing, and spelling usually used in plural
b : the rudiments of a subject usually used in plural

Definition of ABC (Entry 2 of 2)

1 American Bowling Congress
2 American Broadcasting Companies
3 Australian Broadcasting Corporation

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Examples of ABC in a Sentence

Noun a book on the ABCs of computer usage

First Known Use of ABC


14th century, in the meaning defined at sense 1

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Time Traveler for ABC

Time Traveler

The first known use of ABC was in the 14th century

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Statistics for ABC

Cite this Entry

“ABC.” Dictionary, Merriam-Webster, Accessed 29 May. 2020.

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More Definitions for ABC


How to pronounce ABC (audio)

English Language Learners Definition of ABC

: the letters of the English alphabet
: the most basic or important information about a subject

Medical Definition of ABC

atomic, biological, and chemical

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More from Merriam-Webster on ABC

Thesaurus: All synonyms and antonyms for ABC

Rhyming Dictionary: Words that rhyme with ABC

Nglish: Translation of ABC for Spanish Speakers

Britannica English: Translation of ABC for Arabic Speakers

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