Réaumur
biographical name
Ré·au·mur
ˌrā-ō-ˈmyu̇r 
-ˈmᵫr
-ˈmᵫr
René-Antoine Ferchault de 1683–1757 French naturalist and physicist
Cite this Entry
“Réaumur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/R%C3%A9aumur. Accessed 10 Jun. 2026.
Copy CitationMedical Definition
Reaumur
adjective
Re·au·mur
ˌrā-ō-ˈmyu̇(ə)r
: relating or conforming to a thermometric scale on which the boiling point of water is at 80° above the zero of the scale and the freezing point is at zero
the Reaumur thermometer
—abbreviation R
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