| 1. | a suffix occurring in loanwords from Greek denoting a group or unit comprising a certain number, sometimes of years: dyad; triad. |
| 2. | a suffix meaning “derived from,” “related to,” “concerned with,” “associated with” (oread), introduced in loanwords from Greek (Olympiad; oread), used sporadically in imitation of Greek models, as Dunciad, after Iliad. |
| Anatomy, Zoology. a suffix forming adverbs from nouns signifying parts of the body, denoting a direction toward that part: dextrad; dorsad; mediad. |
| -ad suff. In the direction of; toward: cephalad. [From Latin ad, to; see ad- in Indo-European roots.] |
-ad suff.
In the direction of; toward: cephalad.
