vaccine[vak sēn′, vak′sēn]
A variety of vaccines.
- 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.
- 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 (“cow") (because of early use of the cowpox virus against smallpox). Cf. New or Scientific Latin (variola) vaccÄ«na, or "cowpox".