pyramidal tract


: any of four columns of motor fibers that run in pairs on each side of the spinal cord and are continuations of the pyramids of the medulla oblongata

Word History

First Known Use

1857, in the meaning defined above

Time Traveler
The first known use of pyramidal tract was in 1857

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Cite this Entry

“Pyramidal tract.” Dictionary, Merriam-Webster, Accessed 18 Apr. 2024.

Medical Definition

pyramidal tract


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