D defs.my
Entry 2 senses Webster, 1913

Ganglion

/găng'-glē-än/ · Gan·gli·on · IPA /ˈɡæŋ.ɡli.ən/
01 n. A mass or knot of nervous matter, including nerve cells, usually forming an enlargement in the course of a nerve.
pl. Ganglia, Ganglions ((#))
  1. 1.
    A mass or knot of nervous matter, including nerve cells, usually forming an enlargement in the course of a nerve.(Anat.)
  2. 2.
    A globular, hard, indolent tumor, situated somewhere on a tendon, and commonly formed by the effusion of a viscid fluid into it; -- called also weeping sinew.(Med.) Also: weeping sinew
Phrases & compounds
Ganglion cell — a nerve cell. See Illust. under Bipolar.