Definition & Meaning of "degree Celsius"

What is "degree Celsius"?

A degree Celsius "°C" is a unit of temperature measurement in the metric system. It is used to measure temperature on the Celsius scale, which is based on the freezing point of water, 0°C, and the boiling point of water, 100°C, at standard atmospheric pressure. In the Celsius scale, the interval between the freezing and boiling points of water is divided into 100 equal parts, called degrees Celsius. The Celsius scale is commonly used in scientific research, meteorology, and everyday life for expressing temperatures in many countries around the world.