greater splanchnic nerve

n.
  1. A nerve that arises from the fifth or sixth to the ninth or tenth thoracic sympathetic ganglia and passes along the thoracic vertebrae to join the celiac plexus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.