Fah ‧ ren ‧ heit /ˈfærənhaɪt/ BrE AmE noun [uncountable] ( written abbreviation F )
[ Date: 1700-1800 ; Origin: Gabriel Fahrenheit (1686-1736), German scientist ]
a scale of temperature in which water freezes at 32° and boils at 212°:
72° Fahrenheit (=72 degrees on the Fahrenheit scale)
—Fahrenheit adjective