presupposition presuppose • presuppositionless · · · Info · Definitions · Characters · · presupposition · · Text Latin · · Script 14 · · Length 5 · · Syllables Definitions · · · (noun) the act of presupposing; a supposition made prior to having knowledge (as for the purpose of argument). · · Noun Definition 1 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075