[ ahydz ]
/ aɪdz /

noun (used with a singular or plural verb)

(in the ancient Roman calendar) the fifteenth day of March, May, July, or October, and the thirteenth day of the other months.

Origin of ides

1300–50; Middle English < Old French < Latin īdūs (feminine plural); replacing Middle English idus < Latin

Definition for ides (2 of 2)


a Greek plural suffix appearing in scientific names: cantharides.

Origin of -ides

< Greek, plural of -is, suffix of source or origin. See -id1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ides

British Dictionary definitions for ides

/ (aɪdz) /


(functioning as singular) (in the Roman calendar) the 15th day in March, May, July, and October and the 13th day of each other monthSee also calends, nones

Word Origin for ides

C15: from Old French, from Latin īdūs (plural), of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012