| hydrocorallia | <zoology> 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. Origin: NL. See Hydra, and Coral. Source: Websters Dictionary (01 Mar 1998) |
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