発はっ生せい段だん階かい

noun

developmental stage; stage of development

Used in biological, psychological, and general contexts to refer to a phase in the development of an organism, phenomenon, or process.

• この病びょう気きは発はっ生せい段だん階かいで治ち療りょうすれば治なおりやすい。

  This disease is easier to cure if treated at the developmental stage.

• 昆こん虫ちゅうの発はっ生せい段だん階かいを観かん察さつする。

  Observe the developmental stages of insects.