Definition of Réaumur scale in English:

Réaumur scale

noun

  • An obsolete scale of temperature at which water freezes at 0° and boils at 80° under standard conditions.

    • ‘Use of the Réaumur scale was once widespread, but by the late 19th century it had been supplanted by other systems.’
    • ‘The Réaumur scale saw widespread use in Europe, particularly in France and Germany as well as Russia.’

Origin

Late 18th century: named after René A. F. de Réaumur (1683–1757), French naturalist.

Pronunciation:

Réaumur scale

/rāˈōˌmyo͝or//ˌrā-ōˈmyo͝or/