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a thermometer scale in which each degree Réaumur (°R) is 1/80 of the temperature difference between the freezing point and boiling point of pure water at 1 atm, with 0°R set at the freezing point and 80°R set at the boiling point of water.
[René A. F. de Réaumur]
Réaumur scaleAn obsolete temperature scale.
Réaumur,René A.F. de, French physicist, 1683-1757.
Réaumur scale - a thermometer scale.