From Longman Dictionary of Contemporary Englishpresumptivepre‧sump‧tive /prɪˈzʌmptɪv/ adjective formal or technical BELIEVEbased on a reasonable belief about what is likely to be true a presumptive diagnosis —presumptively adverb
Examples from the Corpus
presumptive• His youngest son John was to be betrothed to the Count's daughter and heiress presumptive.• A presumptive diagnosis of gout can often be made on the basis of hyperuricemia and the clinical presentation.• An erect abdominal x ray showed no free gas but a presumptive diagnosis of perforation was made.• Normally, they punish the presumptive nominee in the late primaries.• These are the considerations justifying a presumptive privilege for Presidential communications.• A new poll makes drought-stricken Texas look like an oasis for the support-thirsty presidential campaign of presumptive Republican nominee Bob Dole.• Bob Dole, the presumptive Republican presidential nominee. 