About The Word Planula

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Planula

Planula Meaning & Definition
Planula Definition And Meaning

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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