/ Dictionary / Index A ad kalendas Graecas*: Meaning and Definition of Find definitions for: ad ka•len•das Grae•cas Pronunciation: (äd kä-len'däs grī'käs Eng. ad k&schwa-len'd&schwas grē'k&schwas), [key] — Latin. Latin. at no time; never: from the fact that the Greeks did not reckon dates by calends. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. adjuvant ADL Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language