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Noun: vaccine  vak'seen or 'vak,seen [N. Amer], 'vak,seen [Brit]
  1. Immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies
    "concern about the safety and efficacy of the vaccine";
    - vaccinum

Derived forms: vaccines

Type of: immunizing agent, immunogen

Encyclopedia: Vaccine