单词 | vaccine |
释义 | Word Frequency vaccine(ˈvæksiːn) noun medicine 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. (originally) 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 Word origin C18: from New Latin variolae vaccīnae cowpox, title of medical treatise (1798) by Edward Jenner, from Latin vacca a cow |
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