The Collaborative International Dictionary
Vaccina
Vaccina \Vac*ci"na\, n. [NL.] (Med.) Vaccinia.
WordNet
vaccina
n. a local infection induced in humans by innoculation with the virus causing cowpox in order to confer resistance to smallpox; normally lasts three weeks and leaves a pitted scar [syn: vaccinia, variola vaccine, variola vaccinia, variola vaccina]