gastrulation gastrulate • gasworker · · · Info · Definitions · Characters · · gastrulation · · Text Latin · · Script 12 · · Length Definitions · · · (noun) the process in which a gastrula develops from a blastula by the inward migration of cells. · · Noun Definition 1 Characters · · a latin small letter a U+0061 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075