Definition of 'vaccinia'

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1. (noun) vaccinia, vaccina, variola vaccine, variola vaccinia, variola vaccina a local infection induced in humans by inoculation with the virus causing cowpox in order to confer resistance to smallpox; normally lasts three weeks and leaves a pitted scar 2. (noun) cowpox, vaccinia a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox
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"vaccinia." Definitions.net. STANDS4 LLC, 2008. 23 November. 2008. http://www.definitions.net/definition/vaccinia