MedicalTerminology DB

Meaning of fifth cranial nerve: The main sensory nerve of the head and face, and the motor nerve of the muscles used in chewing.

Definition of fifth cranial nerve

The main sensory nerve of the head and face, and the motor nerve of the muscles used in chewing. Also called trigeminal nerve.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.