- -ad
- -ad-ad1 [ad, əd, id][Gr -as, -ad-] suffix forming nouns1. the name of any of certain collective numerals [dyad]2. the title of any of certain poems [Iliad]3. any of certain plants [cycad]-ad2 [ad][L ad, toward] suffix forming adverbstoward, in the direction of [caudad, cephalad]
English World dictionary. V. Neufeldt. 2014.