Ré`au`mur" (?), a.
Of or pertaining to René Antoine Ferchault de Réaumur; conformed to the scale adopted by Réaumur in graduating the thermometer he invented.
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n.
A Réaumur thermometer or scale.
⇒ The Réaumur thermometer is so graduated that 0° marks the freezing point and 80° the boiling point of water. Frequently indicated by R. Cf. Centigrade, and Fahrenheit. See Illust. of Thermometer.
© Webster 1913.