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From The Collaborative International Dictionary of English v.0.48:
Vaccinate \Vac"ci*nate\, v. t. [imp. & p. p. Vaccinated; p. pr. & vb. n. Vaccinating.] [See Vaccine.] To inoculate with the cowpox by means of a virus, called vaccine, taken either directly or indirectly from cows; now, generally, to administer (by injection or otherwise) any vaccine with the objective of rendering the recipient immune to an infectious disease. One who has been thus immunized by vaccination is said to be vaccinated against a particular disease. One may be thus immunized (vaccinated) also by oral ingestion or inhalation of a vaccine. [1913 Webster +PJC]