ganglion Meaning, Definition & Usage

noun an encapsulated neural structure consisting of a collection of cell bodies or neurons

L. ganglion a sort of swelling or excrescence, a tumor under the skin, Gr. : cf. F. ganglion.

plural L Ganglia E Ganglions

(Anat.) (a) A mass or knot of nervous matter, including nerve cells, usually forming an enlargement in the course of a nerve. (b) A node, or gland in the lymphatic system; as, a lymphatic ganglion.
(Med.) 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.