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avirulent

[ey-vir-yuh-luh nt, ey-vir-uh-]
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adjective
  1. (of organisms) having no virulence, as a result of age, heat, etc.; nonpathogenic.
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Origin of avirulent

First recorded in 1895–1900; a-6 + virulent
Related formsa·vir·u·lence, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for avirulent

avirulent

adjective
  1. (esp of bacteria) not virulent
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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

avirulent in Medicine

avirulent

(ā-vîryə-lənt, ā-vîrə-)
adj.
  1. Not virulent.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.