vaccination

[Eng. vaccinat ( e ); -ion; Fr. vaccination.] 1. Pathology: The act or art of vaccinating; the introduction of vaccine matter into the human frame with the view of protecting it against smallpox, or rendering that disease le formidable. It was at first supposed that the cow-pox (q. v.) had arisen by the transmi ion to the cow of a disease in the horse called "grease," the purulent matter of which was largely employed by Jenner and others for vaccinating purposes, at first after it had been pa ed through the cow and afterward by direct transmi ion. Its employment has long since been abandoned. The cow-pox is not produced in the human frame by effluvia; actual II. Law: Abandoned; having no heir; as, vacant inoculation is required. When vaccine lymph is effects.