sci·u·rid (sī'yŏŏ-rĭd') adj. Of, belonging to, or resembling the Sciuridae, a family of rodents that includes the squirrels and related mammals. n. A sciurid rodent.
[From New Latin Sciūridae, family name, from Latin sciūrus, squirrel; see squirrel.] sci'u·rine (-rīn') adj., sci'u·roid (sī'yŏŏ-roid', sī-yŏŏr'oid) adj.