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n. pl.1.(Zool.) The Athecata; - so called because the medusoid buds are not inclosed in a capsule.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Suborden Athecata (Gymnoblastea, Anthomedusae), Thecata (Calyptoblastea, Leptomedusae) y Limnomedusae.
Of the Gymnoblastic or tubularian hydroids: I The hydroida in general, II The genera and species of the Gymnoblastea. The Ray Society, London, 450 pp.