Latin anno Domini, in the year of our Lord, used to specify numbered years counting from the once estimated birth of Christ in year 1. Usually placed before years (but see notes), and always placed after centuries. Often written in small caps. This year is AD 2011
You use AD in dates to indicate the number of years or centuries that have passed since the year in which Jesus Christ is believed to have been born. Compare BC. The cathedral was destroyed by the Great Fire of 1136 AD The Roman Empire was divided in the fourth century AD. An ad is an advertisement. She replied to a lonely hearts ad. Andorra (in Internet addresses). An advertisement. An advantage in tennis. Anno Domini used to show that a date is a particular number of years after the birth of Christ = CE BC. an advertisement classified ad
anno domini m.s. (milattan sonra), i̇.s. (i̇sa'dan sonra)