ganglion
gan.gli.on \'gan-gle--*n\ \-gle--*\ \'gan-gle--*-.na-t-*d\ \.gan-gle--'a:n-ik\ n or gan.glia also ganglions [LL, fr. Gk] pl 1a: a small cystic tumor connected either with a joint membrane or tendon s heath 1b: a mass of nerve tissue containing nerve cells external to the brain or spinal cord; also : NUCLEUS 2: a focus of strength or energy - gan.gli.on.at.ed aj