If you're referring to the date suffix AD, in the example '600AD,' then it means Anno Domini (in the year of the Lord), which marks the time following Jesus' birth.
:D mean your happy
d d d
d means dick as in 'she wants the d"
what does D mean on your national insurance code
What does D mean in a silver ring
D=500
i think you mean d m v which means department of motor vehichles
H d a z?
10 dimes in a dollar
=D is a smily face.
7 deadly sins
D=8 in algebra