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virulence

[vir-yuh-luh ns, vir-uh-] /ˈvɪr yə ləns, ˈvɪr ə-/
noun
1.
quality of being virulent.
2.
Bacteriology.
  1. the relative ability of a microorganism to cause disease; degree of pathogenicity.
  2. the capability of a microorganism to cause disease.
3.
venomous hostility.
4.
intense sharpness of temper.
Also, virulency.
Origin
1655-1665
1655-65; < Late Latin vīrulentia stench; see virulent, -ence
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for virulency

virulence

/ˈvɪrʊləns/
noun
1.
the quality of being virulent
2.
the capacity of a microorganism for causing disease
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 virulency

virulence

n.

1660s (virulency attested from 1610s), from Latin virulentia, from virulentus (see virulent).

Online Etymology Dictionary, © 2010 Douglas Harper
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virulency in Medicine

virulence vir·u·lence (vēr'yə-ləns, vēr'ə-)
n.

  1. The quality of being poisonous.

  2. The capacity of a microorganism to cause disease.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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virulency in Culture
virulence [(vir-yuh-luhns, vir-uh-luhns)]

The capacity of a pathogen, such as a microorganism or toxin, to produce disease.

Note: “Virulent” substances or organisms are extremely pathogenic or toxic.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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