AD
Abbreviatio
+/-AD sive A.D. sive a.d. (sive A. D.)
- anno Domini; in the year of the/our Lord — anno Domini sive post Christum natum (p. Chr. n.)
AD sive A.D.
- active duty
- athletic director
- average deviation
AD
- (mil.) air defence
- air-dried
- Alzheimer's disease
- average deviation
A.D.
- art director
- assembly district
- assistant director
a.d.
- after date
- ante diem; before the day
- autograph document