endoskeleton








noun Zoology.

  1. the internal skeleton or framework of the body of an animal (opposed to exoskeleton).

noun

  1. the internal skeleton of an animal, esp the bony or cartilaginous skeleton of vertebratesCompare exoskeleton
n.

1838, from endo- + skeleton.

n.

  1. An internal supporting skeleton, derived from the mesoderm, that is characteristic of vertebrates and certain invertebrates.

  1. The internal supporting framework of humans and other vertebrates, usually made of bone. Certain invertebrates, such as sponges and echinoderms, also have endoskeletons. Compare exoskeleton.

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