Main Entry: maxillary nerve Function: noun : the one of the three major branches or divisions of the trigeminal nerve that supplies sensory fibers to the skin areas ofthe middle part of the face, the upper jaw and its teeth, and the mucous membranes of the palate, nasal cavities, and nasopharynx called also maxillary division,superior maxillary nerve;—compare MANDIBULAR NERVE, OPHTHALMICNERVE
maxillary nerven. The second division of the trigeminal nerve, passing from the trigeminal ganglion into the pterygopalatine fossa, where it continues forward to give off the zygomatic nerve and enter the eye socket.