tri·​gem·​i·​nal | \ trī-ˈje-mə-nᵊl How to pronounce trigeminal (audio) \

Definition of trigeminal

: of or relating to the trigeminal nerve

Examples of trigeminal in a Sentence

Recent Examples on the Web Photic sneezing, for instance, is theorized to possibly result from some kind of cross-communication between the trigeminal and optic nerves. Carolyn L. Todd, SELF, "Quick Question: Why Do We Sneeze?," 8 Mar. 2019 Migraines, this theory holds, start when the spreading electrical wave activates the trigeminal ganglion, a cluster of neurons that sit close to the brainstem. Tony Dajer, Discover Magazine, "Vertigo, Panic and Trouble Breathing: What's Going On Here?," 19 Oct. 2018 With oral herpes, HSV-1 hangs out in the trigeminal ganglion, a nerve cluster in your skull. Becky Little, Smithsonian, "Can We Gene-Edit Herpes Away?," 23 Mar. 2018 Idiopathic trigeminal neuritis is the technical diagnosis. Dawn Filos,, "Medical Mystery: What caused dog to have trouble closing his jaw, drinking water?," 15 Dec. 2017 Bode had trigeminal neuritis, which the neurologist on staff confirmed. Dawn Filos,, "Medical Mystery: What caused dog to have trouble closing his jaw, drinking water?," 15 Dec. 2017 Nerves from the head, face, neck and mouth converge onto the brainstem in an area called the trigeminal cervical complex, or the TCC. Heidi Mitchell, WSJ, "What’s the Best Cure for Brain Freeze?," 25 Sep. 2017 People suffering from three medical conditions — hydrocephalus, migraines and trigeminal neuralgia — may be able to use medical marijuana under a plan expected to win approval from the Department of Consumer Protection. Dylan Mcguinness,, "State May Add Three More Conditions For Medical Marijuana," 9 June 2017 Much of the book details Andrew’s hellish 10-year struggle with trigeminal neuralgia, an entangled facial nerve that causes excruciating pain. John Kelly, Washington Post, "D.C. loved Gifford’s ice cream, but for Andrew Gifford, it left a bitter aftertaste," 23 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trigeminal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of trigeminal

1830, in the meaning defined above

History and Etymology for trigeminal

New Latin trigeminus trigeminal nerve, from Latin, threefold, from tri- + geminus twin

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Time Traveler for trigeminal

Time Traveler

The first known use of trigeminal was in 1830

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Cite this Entry

“Trigeminal.” Dictionary, Merriam-Webster, Accessed 19 Sep. 2020.

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More Definitions for trigeminal


tri·​gem·​i·​nal | \ trī-ˈjem-ən-ᵊl How to pronounce trigeminal (audio) \

Medical Definition of trigeminal

 (Entry 1 of 2)

: of or relating to the trigeminal nerve



Medical Definition of trigeminal (Entry 2 of 2)

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