spinous process

noun Anatomy, Zoology.
a spinelike process of a bone, especially the dorsal projection from the center of the arch of a vertebra.

Origin:
1725–35

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

spinous process n.

  1. See sphenoidal spine.

  2. 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.
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Example sentences
The spinous process is developed from the junction of the two halves of the vertebral arch.
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