nounpl. -·glia or -·gli·ons
- a mass of nerve cells serving as a center from which nerve impulses are transmitted
- a center of force, energy, activity, etc.
- a cystic tumor on a tendon sheath
Origin of ganglionspecial use of Late Latin ganglion, a swelling from Gr, tumor, probably reduplicated, reduplication from Indo-European base an unverified form gel-, to form into a ball from source cling, clod