madreporite

 
Pronunciation: /maˈdrɛpərʌɪt, ˌmadrɪˈpɔːrʌɪt/

noun

Zoology
  • a perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled.

Origin:

early 19th century: from madrepore (see Madreporaria) + -ite1