trigeminal ganglion

n.
  1. The large, flattened, sensory ganglion of the trigeminal nerve, lying close to the cavernous sinus along the medial part of the middle cranial fossa.gasserian ganglion semilunar ganglion
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.