See Also: hydroskeleton(medicine)
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hydroskeleton (medicine)


hydroskeleton
<biology> A type of skeleton found in many soft-bodied invertebrates which consists of water-filled body cavities controlled by muscles. Hydroskeletons are found in echinoderms (starfish, sea urchins), annelids (earthworms), nematodes, and a number of other wormlike invertebrate phyla.