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Definitions for: 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
Webster (1913) Definition: 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.
See Also: back, backbone, rachis, spinal column, spine, urochord, vertebral column
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