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[vak-suh-neyt] /ˈvæk səˌneɪt/ Medicine/Medical
verb (used with object), vaccinated, vaccinating.
to inoculate with the vaccine of cowpox so as to render the subject immune to smallpox.
to inoculate with the modified virus of any of various other diseases, as a preventive measure.
verb (used without object), vaccinated, vaccinating.
to perform or practice vaccination.
1800-10; back formation from vaccination
Related forms
prevaccinate, verb (used with object), prevaccinated, prevaccinating.
revaccinate, verb (used with object), revaccinated, revaccinating.
unvaccinated, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for vaccinate
  • vaccinate animals to prevent encephalitis caused by the rabies virus.
  • No one's suggesting utilizing a vaccine as you can't vaccinate for a bacterial infection.
  • vaccinate the natural, sell the artificial everyone.
  • See the current debate regarding whether to vaccinate or not.
  • They then vaccinate patients with these altered cells.
  • You're going to have to vaccinate anything with two legs, he says, because you want the whole population to be vaccinated.
  • Whether these strains can be used to vaccinate mice, or indeed humans, is another matter.
British Dictionary definitions for vaccinate


to inoculate (a person) with a vaccine so as to produce immunity against a specific disease
Derived Forms
vaccinator, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for vaccinate

1803, back-formation from vaccination. Related: Vaccinated; vaccinating.

Online Etymology Dictionary, © 2010 Douglas Harper
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vaccinate in Medicine

vaccinate vac·ci·nate (vāk'sə-nāt')
v. vac·ci·nat·ed, vac·ci·nat·ing, vac·ci·nates
To inoculate with a vaccine in order to produce immunity to an infectious disease such as diphtheria or typhus.

vac'ci·na'tor n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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