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ides

1 American  
[ahydz] / aɪdz /

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.


-ides 2 American  
  1. a Greek plural suffix appearing in scientific names.

    cantharides.


ides British  
/ aɪdz /

noun

  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

"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

Etymology

Origin of ides1

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

Origin of -ides2

< Greek, plural of -is, suffix of source or origin. See -id 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s 44 BC, a bit before the ides of March, and Roman citizens are in the streets singing a cheeky ode to life in the Seven Hills — to the tune of Weezer’s “Beverly Hills.”

From Los Angeles Times

And any silly ides of emancipation flew out of the window.

From Salon

You still have plenty of time before the ides of April arrives.

From Fox News

As each day passed and the ides of July neared, Aurelia became more and more desperate.

From Literature

And this is what he says to Julius Caesar: Beware the ides of March.

From Literature