1 a suspension of dead, attenuated, or otherwise modified microorganisms (viruses, bacteria, or rickettsiae) for inoculation to produce immunity to a disease by stimulating the production of antibodies
2 a preparation of the virus of cowpox taken from infected cows and inoculated in humans to produce immunity to smallpox
3 modifier of or relating to vaccination or vaccinia
4 (Computing) a piece of software designed to detect and remove computer viruses from a system
(C18: from New Latin variolae vaccinae cowpox, title of medical treatise (1798) by Edward Jenner, from Latin vacca a cow)
English Collins Dictionary - English Definition & Thesaurus
To add entries to your own vocabulary, become a member of Reverso community or login if you are already a member.
It's easy and only takes a few seconds:
- Create your own vocabulary list
- Contribute to the Collaborative Dictionary
- Improve and share your linguistic knowledge
"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"