Dictionary.com
definitions

lowest splanchnic nerve

[lō′ĭst]
n.
  1. A nerve containing the sympathetic fibers for the renal plexus, usually contained in the lesser splanchnic nerve, but occasionally existing as an independent nerve.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.