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pathogen

[path-uh-juh n, ‐jen]
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noun
  1. any disease-producing agent, especially a virus, bacterium, or other microorganism.
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Origin of pathogen

First recorded in 1940–45; patho- + -gen
Related formsan·ti·path·o·gen, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for pathogens

pathogen

pathogene (ˈpæθəˌdʒiːn)

noun
  1. any agent that can cause disease
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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

Word Origin and History for pathogens

pathogen

n.

1880, a back-formation from pathogenic.

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Online Etymology Dictionary, © 2010 Douglas Harper

pathogens in Medicine

pathogen

(păthə-jən)
n.
  1. An agent that causes disease, especially a living microorganism such as a bacterium, virus, or fungus.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

pathogens in Science

pathogen

[păthə-jən]
  1. An agent that causes infection or disease, especially a microorganism, such as a bacterium or protozoan, or a virus. See Note at germ.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pathogens in Culture

pathogen

[(path-uh-juhn)]

A disease-causing agent. Microorganisms, viruses, and toxins are examples of pathogens.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.