The symbol "°C" stands for degrees Celsius, a unit of measurement for temperature. It is part of the metric system and is widely used around the world, especially in scientific contexts. The Celsius scale is based on the freezing point of water at 0°C and the boiling point at 100°C under standard atmospheric conditions. Celsius is commonly used in weather reports, cooking, and various scientific applications. It is named after the Swedish astronomer Anders Celsius, who developed the scale in the 18th century. The scale is convenient for everyday use, as it aligns closely with the physical properties of water.