[L. neuter of absurdus adj., used substantively as a scholastic term in med.L.] An absurd or illogical conclusion or condition. See REDUCTIO ad absurdum.

1

a. 1834.  Lamb, Spec. fr. Fuller, 537, note. Setting up an absurdum on purpose to hunt it down.

2

1877.  Kinglake, Crimea (ed. 6), I. xv. 342. Reducing the theory of Representative Government to the absurdum.

3