What Does The Word Anno-domini Means What Does The Abbreviation B.C. Mean? As Opposed To A.D.?

What does the abbreviation B.C. mean? As opposed to A.D.? - what does the word anno-domini means

No, I did not post the answer, "before Christ". Search for words in Latin. Now it's 2008 AD, ie, Anno Domini, or "In the year of the Lord." I am sure that there is an equivalent for BC, but do not know what it is.