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vaccineMain Entry: vac·cine Pronunciation: \vak-ˈsēn, ˈvak-ˌ\ Function: noun Etymology: French vaccin, from vaccine cowpox, from New Latin vaccina (in variolae vaccinae cowpox), from Latin, feminine of vaccinus, adjective, of or from cows, from vacca cow; akin to Sanskrit vaśa cow Date: 1813 : a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease — vaccine adjective
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