Immunization

noun

1. The artificial adaptation of an animal to foreign cells or cell products, brought about by the injection of such foreign material. See immunity, 5.
2. the act of making immune (especially by inoculation).
3. The process by which an individual is exposed to a material that is designed to prime his or her immune system against that material.
4. One such exposure.
5. the act of making immune (especially by inoculation)