prion
noun /ˈpriːɒn/
/ˈpriːɑːn/
(biology- a very small unit of protein that is believed to be the cause of brain diseases such as BSE, CJD and scrapie
普里昂,蛋白质感染粒,朊病毒(能导致脑病) 词源1980s: by rearrangement of elements from pro(teinaceous) in(fectious particle).