"Planula" is a word in ENGLISH
The very young, free-swimming larva of the coelenterates.
It usually has a flattened oval or oblong form, and is entirely covered
with cilia.
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.
How can a man’s candour be seen in all its lustre unless he has a few failings to talk of? But he had an agreeable confidence that his faults were all of a generous kind—impetuous, arm-blooded, leonine; never crawling, crafty, reptilian.
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Why was the cowboy a lot of laughs?He was always horsing around.
An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula …
Read the complete definitionThe process of invagination, in embryonic development, by which a gastrula is formed.
Read the complete definitionThe primitive cell in certain embryonic forms.
Read the complete definitionDerived from epithelial cells and destined to become a part of the muscular system; -- applied to structural elements in …
Read the complete definitionOf or pertaining to the nose and the front of the head; as, the embryonic nasofrontal process which forms the …
Read the complete definitionThe organic basis of bone tissue; the residue after removal of the mineral matters from bone by dilute acid; in …
Read the complete definitionOne of the primary, or first-formed, segments of an embryonic arthropod.
Read the complete definition