ad kalendas Graecas

[ahd kah-len-dahs grahy-kahs; English ad kuh-len-duh s gree-kuh s] /ɑd kɑˈlɛn dɑs ˈgraɪ kɑs; English æd kəˈlɛn dəs ˈgri kəs/

adverb, Latin.

at no time; never: from the fact that the Greeks did not reckon dates by calends.

Origin of ad kalendas Graecas

literally, at the Greek calends

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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