[ gang-glee-uhn ]
/ ˈgæŋ gli ən /
Save This Word!

noun, plural gan·gli·a [gang-glee-uh], /ˈgæŋ gli ə/, gan·gli·ons.
  1. a mass of nerve tissue existing outside the central nervous system.
  2. any of certain masses of gray matter in the brain, as the basal ganglia.
Pathology. a cyst or enlargement in connection with the sheath of a tendon, usually at the wrist.
a center of intellectual or industrial force, activity, etc.
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of ganglion

1675–85; <Late Latin: a type of swelling <Greek gánglion a tumor under the skin, on or near a tendon


gan·gli·al, gan·gli·ar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use ganglion in a sentence

British Dictionary definitions for ganglion

/ (ˈɡæŋɡlɪən) /

noun plural -glia (-ɡlɪə) or -glions
an encapsulated collection of nerve-cell bodies, usually located outside the brain and spinal cord
any concentration of energy, activity, or strength
a cystic tumour on a tendon sheath or joint capsule

Derived forms of ganglion

ganglial or gangliar, adjectiveganglionic or gangliated, adjective

Word Origin for ganglion

C17: from Late Latin: swelling, from Greek: cystic tumour
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

Medical definitions for ganglion

[ găngglē-ən ]

n. pl. gan•gli•ons
A group of nerve cells forming a nerve center, especially one located outside the brain or spinal cord.neuroganglion
A benign tumorlike cyst containing mucopolysaccharide-rich fluid enclosed within fibrous tissue and usually attached to a tendon sheath in the hand, wrist, or foot.myxoid cyst synovial cyst

Other words from ganglion

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

Scientific definitions for ganglion

[ găngglē-ən ]

Plural ganglia
A compact group of neurons enclosed by connective tissue and having a specific function. In invertebrate animals, pairs of ganglia occur at intervals along the axis of the body, with the forwardmost pair functioning like a brain. In vertebrates, ganglia are usually located outside the brain or spinal cord, where they regulate the functioning of the body's organs and glands as part of the autonomic nervous system.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.