Meaning of GASTRULATION
| Pronunciation: | | `gastrû'leyshun
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 WordNet Dictionary |
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| | Definition: | | [n] the process in which a gastrula develops from a blastula by the inward migration of cells |
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| | See Also: | | biological process, development, growing, growth, maturation, ontogenesis, ontogeny, organic process | |
| Webster's 1913 Dictionary |
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| | Definition: | | \Gas`tru*la"tion\ (g[a^]s`tr[.u]*l[=a]"sh[u^]n), n.
(Biol.)
The process of invagination, in embryonic development, by
which a gastrula is formed.
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| Biology Dictionary |
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| | Definition: | | A process during early embryonic development in animals in which large-scale cell migration occurs and different cell types emerge to form the germ layers (endoderm, ectoderm, and sometimes mesoderm). The stage takes place just after the blastula stage and begins with an invagination (indenting) of the hollow ball of cells. During this process, the embryo is called a gastrula. |
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