'Gastrulation' definitions:
Definition of 'gastrulation'
(from WordNet)
noun
The process in which a gastrula develops from a blastula by the inward migration of cells
Definition of 'Gastrulation'
From: GCIDE
- Gastrulation \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. [1913 Webster]