Reaumur

adjective

Re·​au·​mur ˌrā-ō-ˈmyu̇r How to pronounce Reaumur (audio)
ˈrā-ō-ˌmyu̇r
: relating to 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

Word History

Etymology

René Antoine Ferchault de Réaumur

First Known Use

1799, in the meaning defined above

Time Traveler
The first known use of Reaumur was in 1799

Rhymes for Reaumur

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Browse Nearby Words

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Reaumur
Réaumur
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Cite this Entry

“Reaumur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Reaumur. Accessed 7 Jul. 2026.

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Medical Definition

Reaumur

adjective
Re·​au·​mur ˌrā-ō-ˈmyu̇(ə)r How to pronounce Reaumur (audio)
: 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

Biographical Definition

Réaumur

biographical name

Ré·​au·​mur ˌrā-ō-ˈmyu̇r How to pronounce Réaumur (audio) -ˈmᵫr How to pronounce Réaumur (audio)
René-Antoine Ferchault de 1683–1757 French naturalist and physicist
Last Updated: - Definition revised
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