terminal nerve

n.
  1. Any of the plexiform nerve strands passing parallel and medial to the olfactory tracts, distributing with the olfactory nerves and passing centrally into the anterior perforated substance.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.