noun \ˈgaŋ-glē-ən\
plural -glia \-glē-ə\ also gan·gli·ons

Definition of GANGLION

: a small cystic tumor (as on the back of the wrist) containing viscid fluid and connected either with a joint membrane or tendon sheath
a : 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 2—see basal ganglion

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