| ad | a variety of adelgid |
|---|---|
| ad | any of various insects that feed and form galls on conifers |
| ad | plant lice |
| ad | medium-sized penguins occurring in large colonies on the Adelie coast of Antarctica |
| ad | medium-sized penguins occurring in large colonies on the Adelie coast of Antarctica |
| ad | English author whose work used such techniques as stream of consciousness and the interior monologue |
| ad | chief port of Yemen |
| ad | small genus of trees of Tropical Asia and Pacific areas |
| ad | East Indian tree with racemes of yellow-white flowers |
| ad | German statesman |
| ad | (biochemistry) purine base found in DNA and RNA |
| ad | inflammation of a gland or lymph node |