1 a an enlargement or knot on a nerve etc. containing an assemblage of nerve-cells. b a mass of grey matter in the central nervous system forming a nerve-nucleus.
2 Med. a cyst, esp. on a tendon sheath.
3 a centre of activity or interest.
Derivatives:
gangliar adj. gangliform adj. ganglionated adj. ganglionic adj.
Etymology: Gk gagglion
Useful english dictionary. 2012.