Definition of eudiometer in English:

eudiometer

noun

Chemistry
  • A graduated glass tube in which mixtures of gases can be made to react by an electric spark, used to measure changes in volume during chemical reactions.

    • ‘Only some of his inventions are discussed (not the eudiometer or the electrical pistol), and almost no room is dedicated to Volta's nonelectrical studies.’

Origin

Late 18th century (denoting an instrument used to measure amounts of oxygen, thought to be greater in fine weather): from Greek eudios clear, fine (weather), from eu well + dios heavenly.

Pronunciation:

eudiometer

/ˌjuːdɪˈɒmɪtə/