Examples of pyrogen in a Sentence
Recent Examples on the Web
The immune system responds by releasing molecules called pyrogens, which induce fever.
—
Harry Bernheim,
The Conversation,
23 May 2025
Twenty-two participants either got a shot that included a pyrogen — an agent found in bacteria such as E. coli that causes fevers — or a placebo.
—
Jennifer Walter,
Discover Magazine,
29 Dec. 2020
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Harry Bernheim,
The Conversation,
23 May 2025
Twenty-two participants either got a shot that included a pyrogen — an agent found in bacteria such as E. coli that causes fevers — or a placebo.
—
Jennifer Walter,
Discover Magazine,
29 Dec. 2020
Cite this Entry
“Pyrogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrogen. Accessed 29 Jun. 2026.
Copy CitationMedical Definition
pyrogen
noun
py·ro·gen
ˈpī-rə-jən 
: a fever-producing substance (as various thermostable products of bacterial metabolism)
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