What is a centigrade degree?

Gradients and centigrades combine to form a centigrade. For the Spanish and French, “centigrade” was a unit of angular measurement equal to 1/100 of a straight angle. When the temperature was expanded from 0 to 100 degrees, the centigrade became hectograde. The public was largely unaffected. Even though international bodies accepted the degree Celsius in 1948, BBC weather forecasts used degrees centigrade until February 1985. That is why it is called Celsius. The centigrade scale contains 100 degrees between freezing and boiling water.