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Anders [ahn-ders] /ˈɑn dərs/ (Show IPA), 1701–44, Swedish astronomer who devised the Celsius temperature scale.
Also, Centigrade. pertaining to or noting a temperature scale (Celsius scale) in which 0° represents the ice point and 100° the steam point. Symbol: C.
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. Symbol: C.
Compare (def 3).
Contemporary Examples

Early Tuesday temperatures in some parts of the state were already approaching 40 degrees Celsius.
Australia’s Still Burning Justin Green January 7, 2013

The body temperature will drop to about 50 degrees Fahrenheit (10 Celsius), from 98.6 F (37 C).
New ‘Suspended Animation’ Procedure Saves Lives by Replacing Blood with a Cold Electrolyte Solution Elizabeth Lopatto April 1, 2014

On Sunday afternoon, the bottom of one of the reactors rose to 82 degrees Celsius (179.6 degrees Fahrenheit), Tepco said.
New Earthquake Could Hit Japan’s Fukushima Nuclear Plant: Study Samar Halarnkar February 17, 2012

Already with human-induced warming of only 0.8 degrees Celsius, we have turbocharged the climate system.
The Big Idea: Can We Outsmart Climate Change? Clive Hamilton July 18, 2013

The global trend is clear: The average global surface temperature has risen roughly three-quarters of a degree Celsius since 1899.
From Snowy Atlanta to Sunny Sochi, It’s All About Global Weirding Scott Bixby February 11, 2014

Historical Examples

Where not otherwise indicated, temperature is stated in degrees of the Centigrade or Celsius thermometer.
The Voyage of the Vega round Asia and Europe, Volume I and Volume II A.E. Nordenskieold

The bath at 40° Celsius is a real boon for arthritic persons.
Scientific American Supplement, No. 664, September 22,1888 Various

He discovered, thus, that the freezing point is lowered 00075 Celsius by every additional atmosphere of pressure.
Popular scientific lectures Ernst Mach

A cube of ice in a glass of water at zero degrees Celsius exhibits certain properties and performs certain actions at its surface.
What The Left Hand Was Doing Gordon Randall Garrett

Another day brought with it twenty-three degrees of heat of Celsius, when the thermometer was placed in the shade at noon.
With the World’s Great Travellers, Volume IV Various

adjective
denoting a measurement on the Celsius scale C

1850, for Swedish astronomer Anders Celsius (1701-1744) inventor of the centigrade scale in 1742.

Celsius Cel·si·us (sěl’sē-əs, -shəs)
adj.
Abbr. C
Of or relating to a temperature scale that registers the freezing point of water as 0° and the boiling point as 100° under normal atmospheric pressure.
Celsius
(sěl’sē-əs)
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. See Note at centigrade.
Celsius, Anders 1701-1744.
Swedish astronomer who invented the centigrade thermometer in 1742.
Celsius [(sel-see-uhs)]

A temperature scale, also called centigrade, according to which water freezes at zero degrees and boils at one hundred degrees.
Celsius [(sel-see-uhs)]

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.)