Category:Ganglion

Gan"gli*on, n.; pl. L. Ganglia, E. Ganglions. Etym: [L. ganglion a sort of swelling or excrescence, a tumor under the skin, Gr. ganglion.]

1. (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.

2. (Med.)

Defn: 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. Ganglion cell, a nerve cell. See Illust. under Bipolar.