myotome
British
/ ˈmaɪəˌtəʊm /
noun
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any segment of embryonic mesoderm that develops into skeletal muscle in the adult
-
any of the segmentally arranged blocks of muscle in lower vertebrates such as fishes
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.