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madreporite

[ mad-ruh-pawr-ahyt, -pohr-, muh-drep-uh-rahyt ]

noun

  1. a sievelike plate in certain echinoderms, through which water passes into the vascular system.


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Word History and Origins

Origin of madreporite1

First recorded in 1795–1805; madrepore + -ite 1

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Example Sentences

There are five prominent mouth-shields and a separate madreporite on the ventral surface.

Note on the aboral surface of the disk a small striated calcareous plate, the madreporite or madreporic plate.

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