ganglion

noun
gan·​gli·​on | \ ˈgaŋ-glē-ən How to pronounce ganglion (audio) \
plural ganglia\ ˈgaŋ-​glē-​ə How to pronounce ganglion (audio) \ also ganglions

Definition of ganglion

1 : a small cystic tumor connected either with a joint membrane or tendon sheath
2a : a mass of nerve tissue containing cell bodies of neurons external to the brain or spinal cord also : nucleus sense 2b
b : something likened to a nerve ganglion a ganglion of cables and wires

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Other Words from ganglion

ganglionated \ ˈgaŋ-​glē-​ə-​ˌnā-​təd How to pronounce ganglion (audio) \ adjective
ganglionic \ ˌgaŋ-​glē-​ˈä-​nik How to pronounce ganglion (audio) \ adjective

Examples of ganglion in a Sentence

Recent Examples on the Web The ganglion cells transmit the signal to the brain. Caroline Seydel, Forbes, 14 June 2021 Next, the researchers invented a special device to transform visual information from the external world into amber light that could be recognized by the ganglion cells. BostonGlobe.com, 24 May 2021 The ganglion cells then send the signals via the optic nerve to the brain. Amy Dockser Marcus, WSJ, 24 May 2021 But their eyes still have the ganglion cells that route these signals to the brain via the optic nerve. Jocelyn Kaiser, Science | AAAS, 24 May 2021 Recall that the wasp's first sting goes into the first thoracic ganglion, paralyzing the front legs during the initial attack. Kenneth C. Catania, Scientific American, 1 Feb. 2021 Sure enough, the sting was directed into the ganglion. Kenneth C. Catania, Scientific American, 1 Feb. 2021 So, the researchers damaged the optic nerve, then activated the three stem cell genes in the retinal ganglion cells. John Timmer, Ars Technica, 6 Dec. 2020 The team focused specifically on neurons at the back of the eye called retinal ganglion cells. Kelly Servick, Science | AAAS, 2 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ganglion.' 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 ganglion

1597, in the meaning defined at sense 1

History and Etymology for ganglion

borrowed from Latin, borrowed from Greek ganglíon "tumor on a tendon, mass of nerve tissue (thought to resemble such tumors)," of obscure origin

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Time Traveler for ganglion

Time Traveler

The first known use of ganglion was in 1597

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Dictionary Entries Near ganglion

gangling

ganglion

ganglionary

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Cite this Entry

“Ganglion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ganglion. Accessed 22 Oct. 2021.

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More Definitions for ganglion

ganglion

noun

English Language Learners Definition of ganglion

: a mass of nerve cells

ganglion

noun
gan·​gli·​on | \ ˈgaŋ-glē-ən How to pronounce ganglion (audio) \
plural ganglia\ -​glē-​ə \

Kids Definition of ganglion

: a mass of nerve cells especially outside the brain or spinal cord

ganglion

noun
gan·​gli·​on | \ ˈgaŋ-glē-ən How to pronounce ganglion (audio) \
plural ganglia\ -​glē-​ə How to pronounce ganglion (audio) \ also ganglions

Medical Definition of ganglion

1 : a small cystic tumor (as on the back of the wrist) containing viscid fluid and connected either with a joint membrane or tendon sheath
2a : a mass of nerve tissue containing cell bodies of neurons that is located outside the central nervous system and forms an enlargement upon a nerve or upon two or more nerves at their point of junction or separation
b : a mass of gray matter within the brain or spinal cord : nucleus sense 2 — see basal ganglion

More from Merriam-Webster on ganglion

Nglish: Translation of ganglion for Spanish Speakers

Britannica English: Translation of ganglion for Arabic Speakers

Britannica.com: Encyclopedia article about ganglion

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