Madreporal

Madrepora Mad`re*po"ra (m[a^]d`r[-e]*p[=o]"r[.a]), n. [NL. See {Madrepore}.] (Zo["o]l.) A genus of reef corals abundant in tropical seas. It includes than one hundred and fifty species, most of which are elegantly branched. -- {Mad`re*po"ral}, a. [1913 Webster]