Source : Webster's Revised Unabridged Dictionary (1913)

Madreporaria \Mad`re*po*ra"ri*a\, n. pl. [NL. See {Madrepore}.]
   (Zo["o]l.)
   An extensive division of Anthozoa, including most of the
   species that produce stony corals. See Illust. of {Anthozoa}.
   -- {Mad`re*po*ra"ri*an}, a. & n.

Anthozoa \An`tho*zo"a\, n. pl. [NL., fr. Gr. 'a`nqos flower + ?
   animal.] (Zo["o]l.)
   The class of the C[oe]lenterata which includes the corals and
   sea anemones. The three principal groups or orders are
   {Acyonaria}, {Actinaria}, and {Madreporaria}.

Source : WordNet®

Madreporaria
     n : stony corals [syn: {order Madreporaria}]