(n.) The act, art, or practice of vaccinating, or inoculating with the cowpox, in order to prevent or mitigate an attack of smallpox. Cf. Inoculation.

Rh factor agglutinin allergen anaphylactin antiantibody antibody antigen antiserum antitoxic serum antivenin bang booster booster shot fix hit hypodermic hypodermic injection incomplete antibody injection inoculation interferon jet injection mainlining narcotic injection precipitin serum shooting up shot skin-popping vaccination vaccine