Vaccination and immunisation are two different processes. Vaccination only refers to the administration of a vaccine or toxoid, while immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of speÂ­cific vaccines. These are used to protect us and our domestic animals against viral and bacterial diseases.
convertase in Medicine. convertase conÂ·verÂ·tase (kÅn'vÉr-tÄs', kÉn-vÃ»r'-) n. An enzyme that catalyzes the conversion of a substance, such as complement, to its active state.
Definition of conversion. 1  1 : the act of converting : the process of being converted. 2  2 : an experience associated with the definite and decisive adoption of a religion. 3  3a : the operation of finding a converse in logic or mathematicsb : reduction of a mathematical expression by clearing of fractions.