What is the meaning of B.C. and A.D. in time?

What is the meaning of B.C. and A.D. and how does it relate to time?
Asked Dec 29, 2009
Edited Dec 29, 2009
B.C. Means Before Christ
A.D means Anno Domini meaning in the year of the lord.
Answered Dec 29, 2009
There's also B.C.E. and C.E. where the B is Before and the E is Era, the C can be either Common, Christian, or Current. Personally I say Common, but some people say otherwise. It's the timeframe as B.C. and A.D. (I may be wrong about the timeframe, but I'm 90% sure).
Answered Dec 29, 2009

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