フロギストン説せつ

noun

phlogiston theory

Historical scientific term referring to the now-discredited theory that a fire-like element called phlogiston is released during combustion.

• フロギストン説せつは18世せい紀きに広ひろく信しんじられていた。

  The phlogiston theory was widely believed in the 18th century.

• ラヴォアジエの実じっ験けんによってフロギストン説せつは否ひ定ていされた。

  The phlogiston theory was disproved by Lavoisier's experiments.