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endoskeleton vs. exoskeleton

endoskeleton
[en-doh-skel-i-tn] / ˌɛn doʊˈskɛl ɪ tn /

noun

Zoology.

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

exoskeleton
[ek-soh-skel-i-tn] / ˌɛk soʊˈskɛl ɪ tn /

noun

Zoology.

  1. an external covering or integument, especially when hard, as the shells of crustaceans (endoskeleton ).