vaccine[vak sēn′, vak′sēn]
- The definition of a vaccine is an inoculation used to stimulate antibodies in your body so you will develop immunity against a certain disease.
A shot you get that is intended to make you immune to catching the measles is an example of a vaccine.
A variety of vaccines.
- lymph, or a preparation of this, from a cowpox vesicle, containing the causative virus and used in vaccination against cowpox or smallpox
- any preparation of killed microorganisms, living weakened organisms, etc. introduced into the body to produce immunity to a specific disease by causing the formation of antibodies
Origin of vaccineClassical Latin vaccinus, from cows ; from vacca, cow; akin uncertain or unknown; perhaps to Sanskrit vaś, rogue cow
- 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 upon administration to an individual stimulates antibody production or cellular immunity against the pathogen but is incapable of causing severe infection.b. A preparation from the cowpox virus that protects against smallpox when administered to an individual.
- Computers A software program designed to detect and stop the progress of computer viruses.
Origin of vaccineFrom Latin vaccīnus, of cows, from vacca, cow.
From Latin vaccinus, from vacca (â€œcowâ€) (because of early use of the cowpox virus against smallpox). Cf. New or Scientific Latin (variola) vaccÄ«na, or "cowpox".