WordWeb Online

1. Tending to move toward a centre
   "centripetal force"
    
2. Tending to unify
   - unifying
    
3. Of a nerve fibre or impulse originating outside and passing toward the central nervous system
   "centripetal neurons";
   - receptive, sensory

See also: afferent, centralising [Brit], centralizing, inward-developing, inward-moving

Antonym: centrifugal

Encyclopedia: Centripetal