Definition of Hydractinian. Meaning of Hydractinian. Synonyms of Hydractinian

Here you will find one or more explanations in English for the word Hydractinian. Also in the bottom left of the page several parts of wikipedia pages related to the word Hydractinian and, of course, Hydractinian synonyms and on the right images related to the word Hydractinian.

Definition of Hydractinian

Hydractinian
Hydractinian Hy`drac*tin"i*an, n. [See Hydra, and Actinia.] (Zo["o]l.) Any species or marine hydroids, of the genus Hydractinia and allied genera. These hydroids form, by their rootstalks, a firm, chitinous coating on shells and stones, and esp. on spiral shells occupied by hermit crabs. See Illust. of Athecata.

Meaning of Hydractinian from wikipedia

- Olivero, Eduardo B.; Aguirre-Urreta, Maria B. (1994). "A new tube-builder hydractinian, symbiotic with hermit crabs, from the Cretaceous of Antarctica". Journal...
- X-raying such a "s****" sometimes shows gastropod-like spiral growth of hydractinians extending from the original s****, while little remains of the gastropod...