n. [ So named in allusion to the color of red corallin, fr. L. corallum coral. ] (Chem.) A yellow coal-tar dyestuff which probably consists chiefly of rosolic acid. See Aurin, and Rosolic acid under Rosolic. [ 1913 Webster ]
Red corallin, a red dyestuff which is obtained by treating aurin or rosolic acid with ammonia; -- called also pæonin. -- Yellow corallin. See Aurin. [ 1913 Webster ]
n. [ L. corallum coral. ] 1. (Min.) A mineral substance or petrifaction, in the form of coral. [ 1913 Webster ]
2. (Zool.) One of the individual members of a compound coral; or that part formed by a single coral animal. [ Written also corallet. ] [ 1913 Webster ]
‖n. pl. [ NL. See Hydra, and Coral. ] (Zool.) 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. [ 1913 Webster ]
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