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verb (used with object), it·er·at·ed, it·er·at·ing.
  1. to utter again or repeatedly.
  2. to do (something) over again or repeatedly.
verb (used without object), it·er·at·ed, it·er·at·ing.
  1. to operate or be applied repeatedly, as a linguistic rule or mathematical formula.

Origin of iterate

1525–35; < Latin iterātus, past participle of iterāre to repeat, equivalent to iter- (stem of iterum) again + -ātus -ate1
Related formsun·it·er·at·ed, adjective


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1. reiterate, repeat, rehearse.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for iterate


  1. (tr) to say or do again; repeat
Derived Formsiterant, adjectiveiteration or iterance, noun

Word Origin

C16: from Latin iterāre, from iterum again
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

Word Origin and History for iterate


1530s, "to do again, repeat," back-formation from iteration, or else from Latin iteratus, past participle of iterare. Related: Iterated; iterating.

Online Etymology Dictionary, © 2010 Douglas Harper