Definition of "madreporite" []

• A perforated platelike structure in most echinoderms that forms the intake for their water-vascular systems. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Other identifications, such as greco scritto, fior di pesco, lumachella or madreporite rossa di sibilio, karacabey siyah mermer, and bigio antico, are less positive and have to be backed up by archaeometrical analysis."