Medical Dictionary


noun pl Greg·a·rin·i·da \ˌgreg-ə-ˈrin-ə-də\

Medical Definition of GREGARINIDA

:  a large order of parasitic vermiform sporozoan protozoans that usually occur in insects and other invertebrates
greg·a·rine \ˈgreg-ə-ˌrīn, -ˌrēn, -rən\ noun or adjective


How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears