Definition of "positivist" [pos•i•tiv•ist]

• A believer in positivism. (noun)

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• "a more typically Latin American positivist, believing that authoritarianism could be justified if it were a vehicle to bring about progress."
• "To twentieth philosophy, Mach is best known as a positivist who influenced Logical Positivism, a philosopher of physics who influenced Einstein, and an empiricist who denied the reality of atoms."
• "We know that he founded a so-called positivist religion, which still has a few followers."