Definitions

from the GNU version of the Collaborative International Dictionary of English

  • n.pl. The Athecata; -- so called because the medusoid buds are not inclosed in a capsule.

from The Century Dictionary and Cyclopedia

  • In Allman's system, an order of hydroid polyps, corresponding to the Anthomedusæ of Haeckel's later system, and commonly known as tubularian hydroids (in distinction from both campanularian and sertularian hydroids, which are calypto blastic).

Etymologies

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