trigeminal nerve(redirected from Trifacial nerve)
Also found in: Thesaurus, Medical, Encyclopedia.
Either of the fifth pair of cranial nerves, being the chief sensory nerve of the face and the motor nerve of the muscles of chewing and having sensory and motor functions in the teeth, mouth, and nasal cavity. Also called trigeminus.
(Anatomy) anatomy either one of the fifth pair of cranial nerves, which supply the muscles of the mandible and maxilla. Their ophthalmic branches supply the area around the orbit of the eye, the nasal cavity, and the forehead
either of the fifth pair of vertebrate cranial nerves that innervate the jaw muscles and head region.