Source : Webster's Revised Unabridged Dictionary (1913)

Fahrenheit \Fah"ren*heit\a. [G.]
   Conforming to the scale used by Gabriel Daniel Fahrenheit in
   the graduation of his thermometer; of or relating to
   Fahrenheit's thermometric scale. -- n. The Fahrenheit
   termometer or scale.

   Note: The Fahrenheit thermometer is so graduated that the
         freezing point of water is at 32 degrees above the zero
         of its scale, and the boiling point at 212 degrees
         above. It is commonly used in the United States and in
         England.

Source : WordNet®

Fahrenheit
     n : German physicist who invented the mercury thermometer and
         developed the scale of temperature that bears his name
         (1686-1736) [syn: {Gabriel Daniel Fahrenheit}]