n. [ Written also antivenen, antivenine. ] [ Pref. anti- + L. venenum poison. ] (Physiol. Chem.) The serum of blood rendered antitoxic to a venom by repeated injections of small doses of the venom; also, the component of such a serum which is antitoxic to the venom. [ Webster 1913 Suppl. +PJC ]