原げん口こう

noun

blastopore

Embryological term for the opening that forms during gastrulation; used in biology and medical contexts.

• 原げん口こうは胚はい発はっ生せいの過か程ていで形けい成せいされる開かい口こう部ぶである。

  The blastopore is an opening that forms during embryonic development.