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notochord |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Notochord \No"to*chord\, n. [Gr. ? the back + E. chord.] (Anat.) An elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which the centra of the vertebr[ae] and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of {Ectoderm}. From WordNet r 1.6 [wn]: notochord n : 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
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