/ ˌpraɪmə ˈfeɪʃi; NAmE / adjective
[ only before noun ] (from Latin , especially law ) based on what at first seems to be true, although it may be proved false later :
prima facie evidence
► prima facie adverb :
Prima facie, there is a strong case against him.
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WORD ORIGIN
Latin , from primus first + facies face.