- Its symbol is °F. A unit of temperature interval used in the Fahrenheit scale. This scale is based on the freezing and boiling points of water under certain conditions, having an assigned a value of 32 °F and 212 °F, respectively. This temperature scale is rarely used outside of the United States.
- The divisions of the Fahrenheit scale of temperature of which there are 180 between the freezing point and the boiling point of water, 32°F and 212°F respectively. Written °F.