notochord

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no·to·chord

 (nō′tə-kôrd′)
n.
A flexible rodlike structure that is present in the embryos of all chordates and in the adult forms of certain groups, such as the lancelets and hagfishes. The notochord develops into the spinal column in most vertebrates.

[Greek nōton, back + chord.]

no′to·chord′al adj.

notochord

(ˈnəʊtəˌkɔːd)
n
(Zoology) a fibrous longitudinal rod in all embryo and some adult chordate animals, immediately above the gut, that supports the body. It is replaced in adult vertebrates by the vertebral column
ˌnotoˈchordal adj

no•to•chord

(ˈnoʊ təˌkɔrd)

n.
a long, flexible, rod-shaped structure that supports the vertical axis of the body in chordates and vertebrate embryos, in the latter developing into the spinal column.
[1840–50; < Greek nôt(on) the back + Greek chordḗ cord]
no`to•chord′al, adj.

no·to·chord

(nō′tə-kôrd′)
A flexible rod-like structure that forms the main support of the body in the embryos of vertebrate animals, later developing into a true backbone. Primitive relatives of the vertebrates, known as lancelets and tunicates, only have a notochord and never develop a backbone. Animals having a notochord during some stage of their development are called chordates.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.notochord - a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebratesnotochord - 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
urochord - a notochord of a larval tunicate typically confined to the caudal region
spinal column, spine, vertebral column, rachis, backbone, back - the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back"
Translations

no·to·chord

n. notocordio, sostén fibrocelular del embrión que se convierte más tarde en la columna vertebral.