Celsius

[sel-see-uh s, -shee-] /ˈsɛl si əs, -ʃi-/
noun
1.
Anders [ahn-ders] /ˈɑn dərs/ (Show IPA), 1701–44, Swedish astronomer who devised the Celsius temperature scale.
adjective
2.
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.
3.
Thermodynamics. of or pertaining 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 Kelvin (def 3).
British Dictionary definitions for Celsius

Celsius

/ˈsɛlsɪəs/
adjective
1.
denoting a measurement on the Celsius scale C
Word Origin
C18: named after Anders Celsius (1701–44), Swedish astronomer who invented it
Word Origin and History for Celsius

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

Celsius in Medicine

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 in Science
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 in Culture
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.)