Millepore \Mil"le*pore\ (m[i^]l"l[-e]*p[=o]r), n. [L. mille thousand + porus pore: cf. F. mill['e]pore.] (Zool.) Any coral of the genus Millepora, having the surface nearly smooth, and perforated with very minute unequal pores, or cells. The animals are hydroids, not Anthozoa. See {Hydrocorallia}. [1913 Webster]