Lexic.us

Definition of Notochord

1. Noun. 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.

Definition of Notochord

1. n. 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 vertebræ and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of Ectoderm.

Definition of Notochord

1. Noun. A flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive spine ¹

2. Noun. A similar structure found in the embryos of vertebrates from which the spine develops ¹

¹ Source: wiktionary.com

Definition of Notochord

1. [n -S]

Medical Definition of Notochord

1. An axial mesodermal tissue found in embryonic stages of all chordates and protochordates, often regressing as maturity is approached. Typically a rod shaped mass of vacuolated cells. It lies immediately below the nerve cord and may provide mechanical strength to the embryo. (13 Nov 1997)

Lexicographical Neighbors of Notochord

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