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[trahy-jem-uh-nl] /traɪˈdʒɛm ə nl/ Anatomy
of or relating to the trigeminal nerve.
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 of trigeminal
1820-30; < New Latin trigemin(us) (Latin: triple, equivalent to tri- tri- + geminus twin, double) + -al1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for trigeminal
  • The reason may be that capsaicin excites the trigeminal nerve, increasing the body's receptiveness to the flavour of other foods.
  • They are also suffused with branches of the trigeminal nerve, which carries information from the senses to the brain.
  • Most sources believe the optic nerve somehow crosses with the trigeminal nerve, which corresponds with sneeze production.
  • By some not completely understood mechanism, the trigeminal nerve is also involved.
British Dictionary definitions for trigeminal


(anatomy) of or relating to the trigeminal nerve
Word Origin
C19: from Latin trigeminus triplet, from tri- + geminus twin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for trigeminal

1830, from Latin trigeminus "born in threes;" see tri- + geminate.

Online Etymology Dictionary, © 2010 Douglas Harper
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trigeminal in Medicine

trigeminal tri·gem·i·nal (trī-jěm'ə-nəl)
Of or relating to the trigeminal nerves.

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