BC

UK: /ˌbiːˈsiː/

WordReference Random House Unabridged Dictionary of American English © 2026

BC,  Scuba Diving.

1. Sport buoyancy compensator.
2. Abbreviations British Columbia, Canada (approved for postal use).

bc, 

1. Music and Dance basso continuo.
2. Also, bcc   blind copy: used as a notation on the carbon copy of a letter or other document sent to a third person without the addressee's knowledge.

B/C, 

1. Business bills for collection.

B.C., 

1. Bachelor of Chemistry.
2. Bachelor of Commerce.
3. Music and Dance bass clarinet.
4. Military battery commander.
5. Pronouns before Christ (used in indicating dates).
6. British Columbia.
Usage
5. The abbreviation b.c. "before Christ'' is always placed after a date or century:
Cleopatra lived from 69 to 30 b.c.
The war took place in the first century b.c.
See also A.D. 

BC, 

1. Abbreviations British Columbia, Canada (approved for postal use).

Collins Concise English Dictionary © HarperCollins Publishers::

BC abbreviation

1. Also: B.C. (indicating years numbered back from the supposed year of the birth of Christ) before Christ
   Compare AD
2. British Columbia

WordReference Random House Learner's Dictionary of American English © 2026

B.C. or BC, an abbreviation of:

1. Pronouns before Christ;
   in the years before Christ was born (used with dates).