The Collaborative International Dictionary of English v.0.48:
Vaccina \Vac*ci"na\, n. [NL.] (Med.) Vaccinia. [1913 Webster]WordNet (r) 3.0 (2006):
vaccina n 1: 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 [syn: vaccinia, vaccina, variola vaccine, variola vaccinia, variola vaccina]