Celsius is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale two years before his death. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. The unit was known until 1948 as centigrade from the latin 'centum' translated as 100 and 'gradus' translated as 'steps'.
(,
Thu 23 Jun 2011, 9:17,
archived)