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The long rearward projection from the arch of a vertebra that provides a point of attachment for muscles and ligaments.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
spi·nous pro·cess(spīn'ŭs pros'es)
1. The dorsal projection from the center of a vertebral arch.
2. Synonym(s): sphenoidal spine.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
spinous processThe rearward projection of a vertebra.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005