Definition of vaccine noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈvæksiːn//
; NAmE NAmE//vækˈsiːn//
[countable, uncountable] Ailments and diseases, Being ill
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a substance that is put into the blood and that protects the body from a disease a measles vaccine There is no vaccine against HIV infection. See related entries: Ailments and diseases, Being ill Word Originlate 18th cent.: from Latin vaccinus, from vacca ‘cow’ (because of the early use of the cowpox virus against smallpox).Extra examples Researchers are trying to develop a vaccine against the disease. The polio vaccine has saved millions of lives. The vaccine protects babies and children against tuberculosis. a live vaccine containing the polio virus a vaccine for meningitis a vaccine to prevent rubella one dose of BCG vaccine
See the Oxford Advanced American Dictionary entry: vaccine

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