[ vak-sin-ee-uh ]
/ vækˈsɪn i ə /


a variant of the cowpox virus that became established in vaccines derived from cowpox-inoculated humans.
Pathology. an acute infection caused by inoculation with vaccinia virus as a prophylactic against smallpox, characterized by localized pustular eruptions.

Nearby words

  1. vaccinator,
  2. vaccine,
  3. vaccine lymph,
  4. vaccine point,
  5. vaccinee,
  6. vaccinia virus,
  7. vacciniform,
  8. vaccinization,
  9. vaccinology,
  10. vachel

Origin of vaccinia

From New Latin, dating back to 1800–10; see origin at vaccine, -ia

Related formsvac·cin·i·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for vaccinia

British Dictionary definitions for vaccinia


/ (vækˈsɪnɪə) /


a technical name for cowpox
Derived Formsvaccinial, adjective

Word Origin for vaccinia

C19: New Latin, from Latin vaccīnus of cows

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

Medicine definitions for vaccinia


[ văk-sĭnē-ə ]


An infection induced in humans by inoculation with the vaccinia virus in order to confer resistance to smallpox; it is usually limited to the site of inoculation.primary reaction
Related formsvac•cini•al adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.