First Known Use: 1875
Dictionary
pyrogen
noun py·ro·gen \ˈpī-rə-jən\
Definition of PYROGEN
: a fever-producing substance
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Origin of PYROGEN
International Scientific Vocabulary
Medical Dictionary
pyrogen
noun py·ro·gen \ˈpī-rə-jən\
Medical Definition of PYROGEN
: a fever-producing substance (as various thermostable products of bacterial metabolism)
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