gastrulation

gastrulation

[gas-troo-ley-shuhn]
noun Embryology.
1.
the formation of a gastrula.
2.
any process, as invagination, by which a blastula or other form of embryo is converted into a gastrula.

Origin:
1875–80; gastrulate + -ion

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World English Dictionary
gastrulation (ˌɡæstrʊˈleɪʃən)
 
n
embryol the process in which a gastrula is formed from a blastula by the inward migration of cells

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

gastrulation gas·tru·la·tion (gās'trə-lā'shən)
n.
Transformation of the blastula into the gastrula.

The American Heritage® Stedman's Medical Dictionary
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