vaccine definition, vaccine meaning | English dictionary

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      n     (Med)  
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  
vaccine n.
a substance containing a harmless form of the germs that cause a particular disease. It is given to people, usually by injection, to prevent them from getting that disease.

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