trigeminal nerve definition

tri⋅gem⋅i⋅nal

[trahy-jem-uh-nl]

Anatomy

–adjective

1.	of or pertaining to the trigeminal nerve.

–noun

2.	Also called trigeminal nerve. either one of the fifth pair of cranial nerves, consisting of motor fibers that innervate the muscles of mastication, and of sensory fibers that conduct impulses from the head and face to the brain.

Origin:
1820–30; < NL trigemin(us) (L: triple, equiv. to tri- tri- + geminus twin, double) + -al ¹

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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trigeminal nerve
n. Either of the fifth pair of cranial nerves, having sensory and motor functions in the face, teeth, mouth, and nasal cavity. Also called trigeminus.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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trigeminal nerve
noun
the main sensory nerve of the face and motor nerve for the muscles of mastication [syn: trigeminal]

WordNet® 3.0, © 2006 by Princeton University.
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trigeminal nerve (trī-jěm'ə-nəl) Pronunciation Key
Either of the fifth pair of cranial nerves, having sensory and motor functions in the face, teeth, mouth, and nasal cavity.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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trigeminal nerve n.
The chief sensory nerve of the face and the motor nerve of the muscles of chewing. The nuclei of the nerve are in the mesencephalon and in the pons and extend down into the cervical portion of the spinal cord. The nerve emerges by two sensory and motor roots from the pons and enters a cavity of the dura mater at the temporal bone, where its sensory root expands to form the trigeminal ganglion that forms three branches that are designated ophthalmic, maxillary, and mandibular. Also called fifth cranial nerve, trigeminus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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