Alphabet
Vaccine meaning
[vak-seen or, esp. British, vak-seen, -sin]
Definitions of vaccine is:
  • noun vaccine
    any preparation used as a preventive inoculation to confer immunity against a specific disease, usually employing an innocuous form of the disease agent, as killed or weakened bacteria or viruses, to stimulate antibody production.
  • noun vaccine
    the virus of cowpox, used in vaccination, obtained from pox vesicles of a cow or person.
  • noun vaccine
    a software program that helps to protect against computer viruses, as by detecting them and warning the user.