About The Word Planula
Learn about the word Planula to help solve your crossword puzzle. Discover Planula definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Planula
| Planula Definition And Meaning |
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What's The Definition Of Planula?
[n] the flat ciliated free-swimming larva of hydrozoan coelenterates
Synonyms | Synonyms for Planula: Related Terms | Find terms related to Planula: See Also | hydroid | hydrozoan Planula In Webster's Dictionary \Plan"u*la\, n.; pl. {Planul[ae]}. [L., a little plane.]
1. (Biol.) In embryonic development, a vesicle filled with
fluid, formed from the morula by the divergence of its
cells in such a manner as to give rise to a central space,
around which the cells arrange themselves as an envelope;
an embryonic form intermediate between the morula and
gastrula. Sometimes used as synonymous with {gastrula}.
2. (Zo["o]l.) The very young, free-swimming larva of the
c[oe]lenterates. It usually has a flattened oval or oblong
form, and is entirely covered with cilia.
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