Definition of ganglion
-gliaplay \ˈgaŋ-glē-ə\ also
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 2bb : something likened to a nerve ganglion a ganglion of cables and wires
ganglionatedplay \ˈgaŋ-glē-ə-ˌnā-təd\ adjective
ganglionicplay \ˌgaŋ-glē-ˈä-nik\ adjective
Recent Examples of ganglion from the Web
The U.S. Army is researching an anesthetic injection called a stellate ganglion block that could relieve symptoms of post-traumatic stress disorder.
The chip electrically stimulates the retina so ganglion cells can pick up the images.
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.
Origin and Etymology of ganglion
borrowed from Latin, borrowed from Greek ganglíon “tumor on a tendon, mass of nerve tissue (thought to resemble such tumors), of obscure origin
First Known Use: 1597See Words from the same year
GANGLION Defined for English Language Learners
Definition of ganglion for English Language Learners
medical : a mass of nerve cells
GANGLION Defined for Kids
Definition of ganglion for Students
: a mass of nerve cells especially outside the brain or spinal cord
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 separationb: a mass of gray matter within the brain or spinal cord : nucleus 2—see basal ganglion
Seen and Heard
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