单词 | vaccine |
释义 | vac·cine ![]() n. 1. a. A preparation of a weakened or killed pathogen, such as a bacterium or virus, or of a portion of the pathogen's structure, that is administered to prevent or treat infection by the pathogen and that functions by stimulating the production of an immune response. b. A preparation from the cowpox virus that protects against smallpox when administered to an individual. 2. Computers A software program designed to detect and stop the progress of computer viruses. [From Latin vaccīnus, of cows, from vacca, cow.] |
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