Hy`dro*co*ral"li*a\, n. pl. [NL. See Hydra, and Coral.] (Zo["o]l.) A division of Hydroidea, including those genera that secrete a stony coral, as Millepora and Stylaster. Two forms of zooids in life project from small pores in the coral and resemble those of other hydroids. See Millepora.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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