Plain English Meaning
A way of measuring how hot or cold something is, using the temperature scale most people in the U.S. grew up with — where freezing water is 32 and boiling water is 212.
Full Definition
A unit of temperature measurement on the Fahrenheit scale, in which water freezes at 32 °F and boils at 212 °F at standard sea-level pressure. Commonly used in U.S. aviation for reporting outside air temperature, carburetor air temperature, and cylinder head temperature.
Context Anchor
Seen in carburetor icing charts, weather information, and temperature limits in U.S. aviation materials.