The Collaborative International Dictionary
R'eaumur
R'eaumur \R['e]`au`mur"\ (r[asl]`[=o]`m[.u]r"), a. Of or pertaining to Ren['e] Antoine Ferchault de R['e]aumur; conformed to the scale adopted by R['e]aumur in graduating the thermometer he invented. -- n. A R['e]aumur thermometer or scale.
Note: The R['e]aumur thermometer is so graduated that 0[deg] marks the freezing point and 80[deg] the boiling point of water. Frequently indicated by R. Cf. Centigrade, and Fahrenheit. See Illust. of Thermometer.