I. ˌā-(ˌ)bē-ˈsē noun
( plural ABC's or ABCs -ˈsēz)
Date: 13th century
1. : alphabet — usually used in plural
2.
a. : the rudiments of reading, writing, and spelling — usually used in plural
b. : the rudiments of a subject — usually used in plural
II. abbreviation
1. American Bowling Congress
2. American Broadcasting Companies
3. Australian Broadcasting Corporation