- a spinelike process of a bone, especially the dorsal projection from the center of the arch of a vertebra.
Origin of spinous process
First recorded in 1725–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
- sphenoidal spine
- The dorsal projection from the center of a vertebral arch.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.