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  1. the quality of being tenacious, or of holding fast; persistence: the amazing tenacity of rumors.
  2. the quality of retaining something: the tenacity of memory.
  3. the quality or property of holding together firmly: testing the tenacity of the old book's binding.
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Origin of tenacity

1520–30; < Latin tenācitās equivalent to tenāc- (stem of tenāx) holding fast, derivative of tenēre to hold + -itās -ity2
Related formso·ver·te·nac·i·ty, noun


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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Word Origin and History for tenacity


early 15c., from Middle French ténacité (14c.), from Latin tenacitas "the act of holding fast," from tenax (genitive tenacis) "tough, holding fast," from tenere "to hold" (see tenet).

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Online Etymology Dictionary, © 2010 Douglas Harper