English dictionary
hydrocorallia
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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A division of Hydroidea, including those genera that secrete a stony coral, as <i>Millepora</i> and <i>Stylaster</i>. Two forms of zooids in life project from small pores in the coral and resemble those of other hydroids. See <u>Millepora</u>.
Source: webster1913