from the GNU version of the Collaborative International Dictionary of English
- n.pl. 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.
from The Century Dictionary and Cyclopedia
- An order of hydroids.
- A suborder of Testudinata, contrasted with Athecæ, and containing all the tortoises whose carapace is perfect.
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