Meaning of ABC in English

ABC

|āˌbēˈsē, ˌābēˈsē noun

( plural abc's or abcs -ˈsēz)

Usage: usually capitalized A&B&C

1.

a. : alphabet

before I knew my ABC — A.L.Guérard

— usually used in plural

said his ABC's over and over — Mark Derby

b. : the rudiments of reading, writing, and spelling — usually used in plural

a worker learned in little more than his ABC's — H.A.Overstreet

2. : abecedarius

3. obsolete : a primer containing the alphabet and teaching the elements of reading

4.

a. : the rudiments of any field of knowledge or practice

the ABC of piano playing — H.W.Van Loon

b. : the first or basic principle

distrust of everybody became the ABC of ordinary prudence in daily life — Willi Frischauer

5. Britain : an alphabetical guidebook of railway stations and their train service

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.