vaccinateEnglishOxford Dictionary of Englishvaccinate /ˈvaksɪneɪt / ▸ verb [with object] treat (a person or animal) with a vaccine to produce immunity to a particular infectious disease or pathogen: 90 per cent of their employees had been vaccinated all the children were vaccinated against tuberculosis. – DERIVATIVES vaccinator /ˈvaksɪneɪtə / noun