Word Study
bc
WORDNET DICTIONARY
Adverbial bc has 1 sense
- bc(r = adv.all) b.c., before christ - before the Christian era; used following dates before the supposed year Christ was born; "in 200 BC"
CIDE DICTIONARY
bc, n.
before Christ; used in reckoning dates before the supposed year Christ was born, i.e. 1 a. d. . [WordNet 1.5]
For further exploring for "bc" in Webster Dictionary Online