Definition of prima facie in US English:

prima facie

adjective & adverb

  • Based on the first impression; accepted as correct until proved otherwise.

    as adjective ‘a prima facie case of professional misconduct’
    as adverb ‘the original lessee prima facie remains liable for the payment of the rent’
    • ‘The Solicitor argues that these comparative data are not of sufficient quality to overcome the prima facie case of obviousness made by the prior art.’
    • ‘The failure of a public officer to have duly forthcoming any public funds or property with which he is chargeable, upon demand by any duly authorized officer, shall be prima facie evidence that he has put such missing funds or property to personal uses.’


Latin, from primus ‘first’ + facies ‘face’.


prima facie

/ˌprīmə ˈfāSHē//ˌpraɪmə ˈfeɪʃi/