prima facie [ˈpraɪmə ˈfeɪʃi] adv. phr.
1.) At first sight; on the face of it; as appears at first without investigation (O.E.D. 2nd Ed.).
Etymology: Middle English (where it meant 'manifestly'), from Latin prima facie: prima, feminine ablative of primus, first + facie, ablative of facies, shape, face.
"Why did the Marxian analysis of the commodity-formwhich, prima facie, concerns a purely economic questionexert such an influence in the general field of social sciences; why has it fascinated generations of philosophers, sociologists, art historians, and others?" (The Sublime Object of Ideology, Slavoj Zizek, 1989).