Definition

Proper noun A French physicist and naturalist known for his invention of the alcohol thermometer and for significant contributions to various scientific fields, including entomology and metallurgy. (1683–1757)

Usage

This term is used exclusively as a proper noun to refer to the historical figure. * The temperature scale proposed by René Antoine Ferchault de Réaumur was once widely used in Europe. * René Antoine Ferchault de Réaumur conducted pioneering studies on insects.

Advanced Usage

• The Réaumur scale: A temperature scale where the freezing point of water is 0°Ré and the boiling point is 80°Ré, named after him.
  • The recipe, written in the 18th century, called for the sugar syrup to be heated to 60 degrees Réaumur.

Variants and Related Words

• Réaumur (noun): A shortened, common reference to the scientist or, more frequently, to the temperature scale he invented.
  • The old thermometer was calibrated in degrees Réaumur.
• Réaumur scale (noun phrase): The temperature scale he developed.

Synonyms

• Réaumur (when referring to the person)
• French naturalist (a general descriptive term, not a direct synonym)

Noun

1. French physicist who invented the alcohol thermometer (1683-1757)