trigeminal Meaning, Definition & Usage

  1. noun the main sensory nerve of the face and motor nerve for the muscles of mastication
    fifth cranial nerve; trigeminus; nervus trigeminus; trigeminal nerve.

WordNet

Tri*gem"i*nal adjective
Etymology
See Trigeminous.
Definitions
  1. (Anat.) Of, pertaining to, or designating, the fifth pair of cranial nerves, which divide on each side of the head into three main branches distributed to the orbits, jaws, and parts of the mouth; trifacial.

Webster 1913