'immunization' definitions:

Definition of 'immunization'

From: WordNet
noun
The act of making immune (especially by inoculation) [syn: immunization, immunisation]

Definition of 'immunization'

From: GCIDE
  • immunization \immunization\ n. the act of making immune (especially by inoculation).
  • Syn: immunisation. [WordNet 1.5]

Synonyms of 'immunization'

From: Moby Thesaurus