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notochord

play
noun no·to·chord \ˈnō-tə-ˌkȯrd\

Definition of notochord

  1. :  a longitudinal flexible rod of cells that in the lowest chordates (as a lancelet or a lamprey) and in the embryos of the higher vertebrates forms the supporting axis of the body

notochordal

play \ˌnō-tə-ˈkȯr-dəl\ adjective


Origin and Etymology of notochord

Greek nōton, nōtos back + Latin chorda cord — more at cord


First Known Use: 1848


Medical Dictionary

notochord

play
noun no·to·chord \ˈnōt-ə-ˌkȯ(ə)rd\

Medical Definition of notochord

  1. :  a longitudinal flexible rod of cells that in the lowest chordates (as a lancelet or a lamprey) and in the embryos of the higher vertebrates forms the supporting axis of the body, that is almost obliterated in the adult of the higher vertebrates as the bodies of the vertebrae develop, and that arises as an outgrowth from the dorsal lip of the blastopore extending forward between epiblast and hypoblast in the middorsal line

notochordal

\ˌnōt-ə-ˈkȯrd-əl\play adjective



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