Meaning of “B.C.” in the English Dictionary

american-english dictionary

"B.C." in American English

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abbreviation for before Christ, used to show that a year or century comes before the year in which Jesus Christ is thought to have been born:

Caesar was assassinated in 44 B.C.
Note: B.C. always appears after the year.

(Definition of “B.C.” from the Cambridge Academic Content Dictionary © Cambridge University Press)