Meaning of madreporite

mad•re•por•ite

Pronunciation: (mad'ru-pôr"īt, -pōr"-, mu-drep'u-rīt"), [key]
— n.
  1. a sievelike plate in certain echinoderms, through which water passes into the vascular system.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.