hydroskeleton

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English

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Etymology

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From hydro- +‎ skeleton.

Noun

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hydroskeleton (plural hydroskeletons)

English Wikipedia has an article on:
Wikipedia
  1. A hydrostatic skeleton; a structure found in many cold-blooded organisms and soft-bodied animals, consisting of a fluid-filled cavity, the coelom, surrounded by muscles, and used in movement and changing shape.
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