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1. Hard parts (for example, hair, teeth, nails, feathers, hooves, scales) developed from the epidermis in vertebrates. Synonym(s): dermoskeleton
2. Outer chitinous envelope of an insect, or the chitinous or calcareous covering of certain crustaceans and other invertebrates.
dermoskeleton(der?mo-skel'et-on) [? + skeleton]
The apparent external covering of the body; the hair, nails, and teeth in humans. Synonym: exoskeleton