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noun

prion

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Prion (noun) means an abnormally shaped protein that makes other proteins misfold in the same way, causing diseases of the brain and nervous system.

noun
1
An abnormally shaped protein that makes other proteins misfold in the same way, causing diseases of the brain and nervous system.
"Prions retain deep mysteries, the foremost of which is what on earth they exist for." — Matt Ridley, Genome (1999)
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Etymology

From (a reordering of) the initial letters of proteinaceous infectious particle. Coined by American neurologist and biochemist Stanley B. Prusiner in 1982.

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Frequently asked questions

What is the meaning of prion?
"prion" (noun) means an abnormally shaped protein that makes other proteins misfold in the same way, causing diseases of the brain and nervous system.
Definitions from Wiktionary, CC BY-SA 4.0 · etymology from Wiktionary