from
The Collaborative International Dictionary of English v.0.48
Ganglion \Gan"gli*on\, n.; pl. L. {Ganglia}, E. {Ganglions}. [L.
ganglion a sort of swelling or excrescence, a tumor under the
skin, Gr. ?: cf. F. 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.
[1913 Webster]
2. (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}.
[1913 Webster]
{Ganglion cell}, a nerve cell. See Illust. under {Bipolar}.
[1913 Webster]