Celsius

American  

[sel-see-uhs, -shee-] / ˈsɛl si əs, -ʃi- /

noun

1. Anders 1701–44, Swedish astronomer who devised the Celsius temperature scale.

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adjective

1. Also Centigrade pertaining to or noting a temperature scale Celsius scale in which 0° represents the ice point and 100° the steam point. C

2. Thermodynamics. of or relating to a temperature scale having the same units as the Celsius scale but in which the zero point has been shifted so that the triple point of water has the exact value 0.01°; Celsius temperatures are computed from Kelvin values by subtracting 273.15 from the latter. C

Celsius British  

/ ˈsɛlsɪəs /

adjective

1.  C.  denoting a measurement on the Celsius scale

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Celsius ¹ Scientific  

/ sĕl′sē-əs /

1. Relating to a temperature scale on which the freezing point of water is 0° and the boiling point of water is 100° under normal atmospheric pressure.

2. See Note at centigrade

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Celsius ² Scientific  

1. Swedish astronomer who invented the centigrade thermometer in 1742.

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Celsius ¹ Cultural  

1. A temperature scale, also called centigrade, according to which water freezes at zero degrees and boils at one hundred degrees.

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Celsius ² Cultural  

1. A temperature scale in which zero degrees is the freezing point of water and 100 degrees is the boiling point. Temperature in this scale is generally denoted by °C or, in scientific usage, C alone. (Compare Fahrenheit (see also Fahrenheit).)

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Etymology

Origin of Celsius

C18: named after Anders Celsius (1701–44), Swedish astronomer who invented it

Example Sentences

According to new research using satellite radar observations, every 1 degree Celsius increase in average summer temperatures extends glacier melting by roughly three weeks.

From Science Daily • Jun. 12, 2026

However warmth may linger further south with some weather models hinting at temperatures in the mid to high-twenties Celsius later in the week.

From BBC • Jun. 12, 2026

Since then, his stunningly well-preserved remains have been kept at the same temperature -- minus six degrees Celsius -- as his icy tomb.

From Barron's • Jun. 3, 2026

That process usually requires temperatures above 600 degrees Celsius.

From Science Daily • May 30, 2026

Answer: 212 degrees Fahrenheit, 100 degrees Celsius, according to Google.

From "The Science of Breakable Things" by Tae Keller