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[in-ter-akt] /ˌɪn tərˈækt/
verb (used without object)
to act one upon another.
Origin of interact
1740-50; inter- + act Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for interact
Contemporary Examples
Historical Examples
  • It is here that the man cannot act for the woman nor the woman for the man; but both must interact.

    Woman and Labour Olive Schreiner
  • So does every tool, appliance, and machine we use, and so do all the people with whom we interact.

  • The two processes are mutually complementary and often interact in most complex fashion.

  • If the cogs on the gearwheels do not interact, the machine can not work.

    A Librarian's Open Shelf Arthur E. Bostwick
  • It is no mere convention, however, which decrees that the flight of time is best indicated by an interact.

    Play-Making William Archer
British Dictionary definitions for interact


(intransitive) to act on or in close relation with each other
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
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Word Origin and History for interact

"to act on each other," 1805, from inter- + act (v.). Related: Interacted; interacting.

Online Etymology Dictionary, © 2010 Douglas Harper
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