FaustPronunciation: /faʊst/ (also Faustus /-təs/)Definition of Faust (died circa 1540), German astronomer and necromancer. Reputed to have sold his soul to the Devil, he became the subject of a drama by Goethe, an opera by Gounod, and a novel by Thomas Mann. Derivatives Faustian adjective Faust in other Oxford dictionaries Definition of Faust in the US English dictionary