Madreporian

mad·re·pore  (mdr-pôr, -pr)

n.

Any of various stony corals of the order Madreporaria, which includes the reef builders of tropical seas.

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[Italian madrepora : madre, mother (from Latin mter, mtr-; see mter- in Indo-European roots) + -pora (alteration of poro, tufa, pore, from Late Latin porus, passageway; see pore², or from Latin prus, calcareous stone, stalactite, from Greek pros).]

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madre·pori·an adj.

madre·poric adj.