Notochord meaning

nōtə-kôrd
A flexible rodlike structure that forms the main support of the body in all chordates during some stage of their development. In vertebrates, the notochord develops into a true backbone in the embryonic phase. Primitive chordates, such as lancelets and tunicates, retain a notochord throughout their lives.
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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.
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An elongated, rod-shaped structure composed of cells, forming the primitive supporting axis of the body in the lowest chordates and lying between the digestive tract and the central nervous system.
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A similar structure in the embryonic stages of higher vertebrates, which later is surrounded and replaced by the vertebral column.
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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.
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A flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive spine.
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A similar structure found in the embryos of vertebrates from which the spine develops.
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Origin of notochord

  • Greek nōton back chord

    From American Heritage Dictionary of the English Language, 5th Edition