spinous process

noun

: a bony process of a vertebra that projects posteriorly from the neural arch and the junction of two laminae and provides attachment for muscles concerned especially with flexion, extension, rotation, and stability of the spinal column

Note: The spinous processes can be felt directly under the skin as bony projections along the length of the spinal column with the spinous process of the seventh vertebra in the neck region typically being the most prominent.

Examples of spinous process in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Middleton allegedly sustained a fracture to her spinous process, a part of the bone in her neck. Colson Thayer, PEOPLE, 20 Jan. 2026

Word History

First Known Use

1732, in the meaning defined above

Time Traveler
The first known use of spinous process was in 1732

Browse Nearby Words

Cite this Entry

“Spinous process.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spinous%20process. Accessed 12 Feb. 2026.

Medical Definition

spinous process

noun
: spine sense 2
specifically : a bony process of a vertebra that projects posteriorly from the neural arch and the junction of two laminae and provides attachment for muscles concerned especially with flexion, extension, rotation, and stability of the spinal column

Note: The spinous processes can be felt directly under the skin as bony projections along the length of the spinal column with the spinous process of the seventh vertebra in the neck region typically being the most prominent.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster