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

en′do·skel′e·tal (-ĭ-tl) adj.
References in periodicals archive ?
Lastly, participants were required to own, and use daily, an endoskeletal prosthesis with a comfortable socket and a passive, non-microprocessor-controlled prosthetic knee.
Food and Drug Administration to sell its Endoskeletal TAS system for anterior lumbar interbody fusion with integrated fixation screws.
Moore-Keish contends that Christian worship is most faithful when it conforms to the endoskeletal structure of the Ordo and is then enfleshed in ways appropriate to particular cultures.
We are endoskeletal beings, with the body keeping the spine, nerves, and blood vessels in proper alignment through most of life.
Endoskeletal limbs prepared in this manner are quite light and comfortable for the patients.