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resistant

[ri-zis-tuh nt]
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adjective
  1. resisting.
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noun
  1. a person or thing that resists.
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Origin of resistant

1590–1600; < Middle French resistant, present participle of resister to resist; see -ant
Related formsre·sist·ant·ly, adverban·ti·re·sis·tant, adjective, nounan·ti·re·sis·tant·ly, adverbun·re·sist·ant, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for resistant

resistant

adjective
  1. characterized by or showing resistance; resisting
    1. impervious to the action of corrosive substances, heat, etca highly resistant surface
    2. (in combination)a heat-resistant surface
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noun
  1. a person or thing that resists
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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 resistant

adj.

c.1600, from French résistant, present participle of résister (see resist). In reference to diseases or drugs from 1897.

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Online Etymology Dictionary, © 2010 Douglas Harper