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Pronunciation: ek'so-skel'e-ton


  1. Hard parts (hair, teeth, nails, feathers, hooves, scales) developed from the epidermis in vertebrates.
  2. Outer chitinous envelope of an insect, or the chitinous or calcareous covering of certain crustaceans and other invertebrates.

Synonym(s): dermoskeleton

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.