madreporite

American  

[mad-ruh-pawr-ahyt, -pohr-, muh-drep-uh-rahyt] / ˈmæd rəˌpɔr aɪt, -ˌpoʊr-, məˈdrɛp əˌraɪt /

noun

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

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Etymology

Origin of madreporite

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