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n. pl.1.(Zool.) A division of Hydroidea in which the zooids are naked, or not inclosed in a capsule. See Tubularian.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Suborden Athecata (Gymnoblastea, Anthomedusae), Thecata (Calyptoblastea, Leptomedusae) y Limnomedusae.
The variation of Halocordyle disticha (Cnidaria, Athecata) from the Brazilian coast: an environmental indicator species?
Observations on the settling behaviour of planulae of Clava multicornis Forskal (Hydroidea, Athecata).