Celsius
Celsius
Designation of the degree on the International Practical Temperature Scale; also used for the name of the scale, as "Celsius Temperature Scale." Formerly (prior to 1948) called "Centigrade." The Celsius temperature scale is related to the International Kelvin Temperature Scale by the equation TC= TK- 273.16.
Symbol, C. Graduated to a scale of 100; of or pertaining to such a scale. On the centigrade thermometer the freezing point of water is 0 degrees (C) and its boiling point is 100 degrees (C). If any degree on the centigrade scale, either above or below 0 degrees C, is multiplied by 1.8, the result will be, in either case, the number of degrees above or below 32 degrees F, or the freezing point of Fahrenheit.