pyrogen

pyrogen

[pahy-ruh-juhn, -jen]
noun
a substance, as a thermostable bacterial toxin, that produces a rise in temperature in a human or animal.

Origin:
1855–60; pyro- + -gen

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World English Dictionary
pyrogen (ˈpaɪrəʊˌdʒɛn)
 
n
any of a group of substances that cause a rise in temperature in an animal body

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

pyrogen py·ro·gen (pī'rə-jən)
n.
A substance that produces a fever.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
pyrogen   (pī'rə-jən)  Pronunciation Key 
A polypeptide that produces fever by causing metabolic changes in the hypothalamus. Pyrogens are either exogenous (produced by infectious agents) or endogenous (produced by cells in the body such as macrophages).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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