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avidity

[uh-vid-i-tee]
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noun
  1. eagerness; greediness.
  2. enthusiasm or dedication.

Origin of avidity

1400–50; late Middle English avidite < Middle French < Latin aviditās. See avid, -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for avidity

avidity

noun
  1. the quality or state of being avid
    1. eagerness
    2. greed; avarice
  2. chem
    1. the strength of an acid or base in proportion to its degree of dissociation
    2. another term for affinity (def. 6b)
  3. immunol a measure of antigen-to-antibody binding, based on the rate of formation of the complex
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 avidity

n.

mid-15c., "eagerness, zeal," from Old French avidite "avidity, greed," from Latin aviditatem (nominative aviditas) "eagerness, avidity," noun of quality from avidus (see avid).

Online Etymology Dictionary, © 2010 Douglas Harper