from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A group of nerve cells forming a nerve center, especially one located outside the brain or spinal cord.
- n. A center of power, activity, or energy.
- n. Pathology A benign cystic lesion resembling a tumor, occurring in a tendon sheath or joint capsule.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mass of tissue.
- n. A cluster of interconnecting nerve cells outside the brain.
- n. A centre of power or authority
from the GNU version of the Collaborative International Dictionary of English
- n. A mass or knot of nervous matter, including nerve cells, usually forming an enlargement in the course of a nerve.
- n. A node, or gland in the lymphatic system.
- n. 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.
from The Century Dictionary and Cyclopedia
- n. An enlargement in the course of a nerve, containing or consisting of a collection of ganglion-cells; any assembly of ganglion-cells.
- n. A knot or enlargement on a lymphatic; a lymphatic gland. See cut under lymphatic.—
- n. In pathology:
- n. An encysted enlargement in connection with the sheath of a tendon: called simple ganglion.
- n. Inflammation, with effusion into one or more sheaths of tendons: called diffuse ganglion.
- n. An enlarged bursa.
- n. In botany, the mycelium of certain fungals.
- n. The superior ganglion, or ganglion of the root of the pneumogastric nerve, in its passage through the jugular foramen.
- n. The lower ganglion, or ganglion of the trunk. Also vagus ganglion.
- n. Same as Gasserian ganglion.
- n. In cephalopods, same as stellate ganglion .
- n. In cephalopods, a large flat ganglion lying on the inner surface of the mouth, in front of the gill.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an encapsulated neural structure consisting of a collection of cell bodies or neurons
From Greek, cystlike tumor, nerve bundle.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek γάγγλιον (ganglion, "encysted tumour on a tendon, anything gathered into a ball"). (Wiktionary)