spinous process: Meaning and Definition of

spi'nous proc"ess

Pronunciation: [key]
— Anat., Zool. Anat.,Zool.
  1. a spinelike process of a bone, esp. the dorsal projection from the center of the arch of a vertebra.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.