Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An agent that causes disease, especially a living microorganism such as a bacterium or fungus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa or fungi. Microorganisms are not considered to be pathogenic until they have reached a population size that is large enough to cause disease.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any microorganism which causes disease; a pathogenic organism; an infectious microorganism; a bacterium, virus, or other agent which can cause disease by infection; -- opposed to zymogene. The spelling pathogene is now archaic.

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

  • n. any disease-producing agent (especially a virus or bacterium or other microorganism)

Etymologies

From patho- + -gen. (Wiktionary)

Examples

  • More people than just me immediately thought of Michael Crichton’s The Andromeda Strain, in which a deadly pathogen is brought to Earth from space.

    Avert your eyes!

  • "[Phages] are specific to a particular bacterial strain, so researchers will have to isolate and culture a phage for every potential coral pathogen, which isn't feasible."

    Global warming takes a toll on coral reefs

  • And therefore you've got a lot of hosts available to exchange a pathogen, which is one of the processes by which viruses and bacteria evolve and acquire mutations. "www. loe.org" Bacteria are able to develop antibiotic resistance when exposed to low doses of drugs over long periods of time.

    WN.com - Articles related to Swine industry losses are 'critical'

  • Called chikungunya, from an East African tribal word describing the contorted postures of its pain-wracked victims, the pathogen has been the focus of intense scientific interest ever since a 2006 outbreak on the island of La Reunion in the Indian Ocean infected about 266,000 people, killing 260 of them.

    RedOrbit News - Technology

  • If the pathogen is a virus the phagocytes can't destroy hot cells.

    WN.com - Articles related to Physicians in Qatar work on treatment of ovarian cancer

  • Long-spined sea urchins were once extremely common off the coasts of Bermuda but after some pathogen, which is still a mystery to the science community, attacked theses creatures in 1983 their sightings have decreased a notable amount.

    CreationWiki - Recent changes [en]

  • For vaccines, identification of conserved epitope among variants of a pathogen is a winning strategy to make functional vaccines.

    Newswire Today - Free Newswire - Press Releases Distribution

  • Carried by animals like rats and dogs, the pathogen is usually a problem that arises during widespread flooding.

    Canadian Online Health News

  • The pathogen is a few orders of magnitude larger than any other known virus, which has prompted a number of delays in its research.

    Softpedia News - Global

  • The researchers revealed that SopB, at first, works within the external membrane of the cell, called the plasma membrane, to coax the cell into taking in the pathogen, which is then encapsulated within a tiny bubble-like compartment called a vesicle.

    dailyindia.com News Feed

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