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Notochord   /nˈoʊtəkˌɔrd/   Listen
Notochord

noun
1.
A flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates.






WordNet 3.0 © 2010 Princeton University








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"Notochord" Quotes from Famous Books



... pointed out the fact, that, while the Pycnodonts never possess true vertebral centra, they differ in the degree of expansion and extension of the ends of the bony arches of the vertebrae upon the sheath of the notochord; the Carboniferous forms exhibiting hardly any such expansion, while the Mesozoic genera present a greater and greater development, until, in the Tertiary forms, the expanded ends become suturally united so as to form a sort of false vertebra. ...
— Discourses - Biological and Geological Essays • Thomas H. Huxley



Words linked to "Notochord" :   vertebral column, urochord, backbone, back, spine, rachis, spinal column



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