reductio ad absurdumre·duc·ti·o ad ab·sur·dum
Logic the proof of a proposition by showing its opposite to be an obvious falsity or self-contradiction, or the disproof of a proposition by showing its consequences to be impossible or absurd
often shortened to reductio
Origin of reductio ad absurdumL, reduction to absurdity
reductio ad absurdum
nounpl. re·duc·ti·o·nes ad absurdum
Disproof of a proposition by showing that it leads to absurd or untenable conclusions.
Origin of reductio ad absurdumMedieval Latin reducti&omacron; ad absurdum : Latin reducti&omacron;, a bringing back, reduction + Latin ad, to + Latin absurdum, absurdity, from neuter of absurdus, absurd.
- (mathematics, logic) The method of proving a statement by assuming the statement is false and, with that assumption, arriving at a blatant contradiction.
reductio ad absurdum - Legal Definition
Reduction to the absurd. In logic, disproving an argument by demonstrating that it leads to a ridiculous conclusion.