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 (ā-vîr′yə-lənt, ā-vîr′ə-)
Not virulent.

a·vir′u·lence n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Microbiology) (esp of bacteria) not virulent
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(eɪˈvɪr yə lənt, eɪˈvɪr ə-)

(of microorganisms) having lost virulence; no longer pathogenic.
a•vir′u•lence, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.avirulent - not virulent; unable to produce disease
virulent - infectious; having the ability to cause disease
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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In summary, the results demonstrate that prestimulated astrocytes can inhibit the proliferation of avirulent strains of T.
Soil probably contains a variety of naturally occurring phages active against both avirulent B.
In November 1998, NTGSN detected 11 isolates from previously reported TB cases among persons in New Jersey whose DNA fingerprints matched the avirulent laboratory M.
Mutants of Salmonella typhimurium that cannot survive within the macrophage are avirulent. Proc Natl Acad Sci USA 1986; 83 : 5189-93.
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Characterization of clone 13, a naturally attenuated avirulent isolate of Rift Valley fever virus, which is altered in the small segment.
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Characterization of virulent and avirulent A/chicken/Pennsylvania/ 83 influenza A viruses: potential role of defective interfering RNAs in nature.