reductio reductibility • reductio ad absurdum · · · Info · Definitions · Synonyms · Characters · · reductio · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) (reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction. Synonyms: reductio ad absurdum. · · Noun Definition 1 Synonyms · · · reductio ad absurdum · · Synonym 1 Characters · · c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075