cowpox Hear it!

cowpox definition

cow·pox (ko̵u′päks′)

noun

a contagious viral disease of cows that causes pustules on the udders: people inoculated with a vaccine containing the virus of cowpox become temporarily immune to smallpox

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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