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myotome

British  
/ ˈmaɪəˌtəʊm /

noun

  1. any segment of embryonic mesoderm that develops into skeletal muscle in the adult

  2. any of the segmentally arranged blocks of muscle in lower vertebrates such as fishes

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.