- A spinal nerve root.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for radicula
Radicle or Radicula: that joint of the antenna that is articulated to the head.Explanation of Terms Used in Entomology
John. B. Smith