noun
gastrula
Embryological term for the stage following the blastula, characterized by the formation of germ layers.
原腸胚は、発生の過程で外胚葉、中胚葉、内胚葉の三層を形成する。
The gastrula forms three layers—ectoderm, mesoderm, and endoderm—during development.
神経胚 (neurula) follows the gastrula stage and involves the formation of the neural tube.
Compound of 原腸 (primitive gut) and 胚 (embryo), reflecting the formation of the archenteron during gastrulation.