Reaumur a. : Of or pertaining to Rene Antoine Ferchault de Reaumur; conformed to the scale adopted by Reaumur in graduating the thermometer he invented.

Reaumur n. : A Reaumur thermometer or scale.

Example:
What value of temperature has the same value of Celsius, Fahrenheit, Kelvin, and Rankine/Reaumur?...?

Taxonomy
Réaumur, Réaumur scale, thermometers, free encyclopedia, number 80, temperature scale, Reaumur thermometer, tube, cheeses, René Antoine Ferchault de Réaumur, search, temperature conversion, conversion formulae, intervals, temperatures, pharmacy, Vienna, room temperature.

Defination from the web:
Réaumur ... The Réaumur scale saw widespread use in Europe, particularly in France and Germany as well as Russia, as referenced in works of Dostoyevsky, ...