from The Century Dictionary.
- An order of hydroids.
- A suborder of Testudinata, contrasted with Athecæ, and containing all the tortoises whose carapace is perfect.
from the GNU version of the Collaborative International Dictionary of English.
- noun plural (Zoöl.) A division of hydroids comprising those which have the hydranths in thecæ and the gonophores in capsules. The campanularians and sertularians are examples. Called also
Thecata. See Illust.under hydroidea.
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