[ ahydz ]

noun(used with a singular or plural verb)
  1. (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

Other definitions for -ides (2 of 2)


  1. 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. 2023

How to use ides in a sentence

  • The next of which was Le bon-sens, ou ides naturelles opposes aux ides surnaturelles.

    Baron d'Holbach | Max Pearson Cushing
  • A troop of pipe-players to Minerva on the ides of June, if we win!

    The Lion's Brood | Duffield Osborne
  • I vow to thee a troop of pipe-players upon the ides of June.

    The Lion's Brood | Duffield Osborne
  • With the advent of the fateful ides of March, winter ii had practically set in, and work outside had a chequered career.

    The Home of the Blizzard | Douglas Mawson
  • Laurence to his sweetest son, Severus, borne away by angels on the seventh ides of January.

    The Hearth-Stone | Samuel Osgood

British Dictionary definitions for ides


/ (aɪdz) /

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

Origin of 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