Definition of notochord in English:

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Pronunciation: /ˈnōdəˌkôrd/


A cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.
Example sentences
  • In those chordates which lack bone, muscles work against the notochord to move the animal.
  • In the evolution of vertebrates, long bodies with continuously flexible notochords and segmental muscles existed before the appearance of segmental vertebrae.
  • They all have, at some embryonic stage, a notochord, flanked by muscle, and a dorsal neural tube.


Mid 19th century: from Greek nōton 'back' + chord2.

For editors and proofreaders

Syllabification: no·to·chord

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