Noun
absurdum (plural absurda)
An illogical conclusion or state. [First attested in the mid 19 century.]
Credo quia absurdum – I believe because it is absurd. Robert Ludlum
Burke imitated Bolingbroke's style and ideas in a reductio ad absurdum of his arguments for atheistic rationalism, demonstrating their absurdity. Source: Internet
Buddhapālita (470–550) has been understood as the originator of the 'prāsaṅgika' approach which is based on critiquing essentialism only through reductio ad absurdum arguments. Source: Internet
However, Abelard in his Dialectica made a reductio ad absurdum argument against the idea that the copula can express existence. Source: Internet
Euclid stipulated this so that he could construct a reductio ad absurdum proof that the two numbers' common measure is in fact the greatest. Source: Internet
Stated in terms of von Neumann ordinals We will prove this by reductio ad absurdum. Source: Internet