madreporite

noun
mad·re·por·ite | \ˈma-drə-ˌpȯr-ˌīt \

Definition of madreporite 

: a perforated or porous body that is situated at the distal end of the stone canal in echinoderms

First Known Use of madreporite

1869, in the meaning defined above

History and Etymology for madreporite

International Scientific Vocabulary madrepore + -ite entry 1 (segment); from the resemblances of the perforations to those of a madrepore

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The first known use of madreporite was in 1869

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