Definition of notochord
: a longitudinal flexible rod of cells that in the lowest chordates (such as a lancelet or a lamprey) and in the embryos of the higher vertebrates forms the supporting axis of the body
notochordalplay \ˌnō-tə-ˈkȯr-dəl\ adjective
Recent Examples of notochord from the Web
But several fossils revealed that the band bore the hallmark traits of a notochord, the rubbery tube surrounding some primitive vertebrates’ spinal cords.
Instead what’s called a notochord, a flexible rod of tissue, extends along hagfish backs.
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Medical Definition of notochord
: 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
Learn More about notochord
Britannica.com: Encyclopedia article about notochord
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