01 n. pl. An extensive division of Hydroidea; the tubularians; -- called also Athecata, Gymnoblastea, and Tubulariae.
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1.
An extensive division of Hydroidea; the tubularians; -- called also Athecata, Gymnoblastea, and Tubulariae.(Zool.) Also: Athecata, Gymnoblastea, Tubulariae