Dictionary.com

pyrogen

[ pahy-ruh-juhn, -jen ]
/ ˈpaɪ rə dʒən, -ˌdʒɛn /
Save This Word!

noun
a substance, as a thermostable bacterial toxin, that produces a rise in temperature in a human or animal.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of pyrogen

First recorded in 1855–60; pyro- + -gen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use pyrogen in a sentence

British Dictionary definitions for pyrogen

pyrogen
/ (ˈpaɪrəʊˌdʒɛn) /

noun
any of a group of substances that cause a rise in temperature in an animal body
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

Medical definitions for pyrogen

pyrogen
[ pīrə-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.

Scientific definitions for pyrogen

pyrogen
[ pīrə-jən ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK