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immunization

noun C1
  1. The process by which a person is safely exposed in a controlled manner to a material that is designed to prime their immune system against that material. (US, uncountable) · Near-synonym: vaccination (broadly synonymous)· Immunization against influenza is important for all child-care workers.
  2. One such exposure. (US, countable) · The first immunization a baby gets is against HBV.
  3. The process by which any organism's body develops immunity against a pathogen. (US, uncountable)

Plural immunizations

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.