from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the state of being virulent
  • n. a measure of how virulent a thing is

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality or state of being virulent or venomous; poisonousness; malignancy.
  • n. Extreme bitterness or malignity of disposition.

from The Century Dictionary and Cyclopedia

  • n. The quality of being virulent, or charged with virus.
  • n. Synonyms Poisonousness, venom, deadliness.
  • n. Asperity, Harshness. See acrimony.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. extreme hostility
  • n. extreme harmfulness (as the capacity of a microorganism to cause disease)


Sorry, no etymologies found.


  • Throughout the manuscript, the term virulence factor will be used in accordance with the definition proposed by Wood et al; "A component of a pathogen that when deleted specifically impairs virulence but not viability"

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  • It is very noteworthy here that one must certainly not conclude that the loss of disease-causing activity for cattle necessarily means a decrease in virulence for other animals.

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  • What wonder, that this year, when as we are told, its virulence is unexampled in


  • This is the part that makes us sick that they call virulence in the article.

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  • Current tests have been conducted in a maximum bio-hazard facility, and the results indicate that this virus’s virulence is exactly as advertised, killing mice and monkeys in remarkably short periods.

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  • The harshness with which a parasite treats its host—what biologists call virulence—contains a trade-off.

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  • To this aim, they deliver so-called virulence factors through a transport channel located in the bacterial membrane. - latest science and technology news stories

  • The homologues have not been described as virulence determinants but a similar peptidase has been identified in

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  • These molecules, called virulence factors, play a sophisticated game of mimicry, imitating many of the cells 'normal activities but ultimately co-opting them to serve the bacteria's needs.


  • She said bacteria cause disease by producing molecules called virulence factors, which require a type of chemical bond, disulfide bonds, to function.

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