Definitions
from The Century Dictionary.
- noun A name given by Allman to the larval condition of Hydrophora (Hydrozoa), appearing when the ciliated locomotive planula or embryo has become fixed by its aboral end, and has passed into the elongated gastrula-stage by the formation of the mouth with its circlet of tentacles. See
planula .
from the GNU version of the Collaborative International Dictionary of English.
- noun plural (Zoöl.) A kind of embryo of certain hydroids (Tubularia), having a stellate form.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun zoology A kind of
embryo of certainhydroids (Tubularia ), having astellate form.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
From Ancient Greek, a ray.
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