Meaning of C in English

C

c ( also c. )

1 . ( also C ) the written abbreviation of century :

the economic changes of the C20th

2 . a written abbreviation of circa (=about) , used especially before dates:

c. 1830

3 . © the written abbreviation of copyright

4 . American English the written abbreviation of cup , used in cooking

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.