Celsius

biographical name

Cel·​sius ˈsel-sē-əs How to pronounce Celsius (audio)
-shəs
Anders 1701–1744 Swedish astronomer

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Cite this Entry

“Celsius.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Celsius. Accessed 9 Jun. 2026.

Kids Definition

Celsius

adjective
Cel·​sius ˈsel-sē-əs How to pronounce Celsius (audio)
ˈsel-shəs
: relating to or having a scale for measuring temperature on which the interval between the triple point and the boiling point of water is divided into 99.99 degrees with 0.01° representing the triple point and 100.00° the boiling point
also : centigrade
abbreviation C

Medical Definition

Celsius

adjective
: relating to or having a scale for measuring temperature on which the interval between the triple point and the boiling point of water is divided into 99.99 degrees with 0.01° being the triple point and 100.00° the boiling point
abbreviation C
compare centigrade
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