Search Result for "reductio": 
Wordnet 3.0

NOUN (1)

1. (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;
[syn: reductio ad absurdum, reductio]



WordNet (r) 3.0 (2006):

reductio
    n 1: (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 [syn: reductio ad absurdum, reductio]