infirmātĭo

I. a weakening, invalidating.

I. Rerum judicatarum, Cic. Agr. 2, 3, 8; 2, 4, 10.—

II. Transf., a refuting, disproving: judicatio est, quae ex infirmatione et confirmatione rationis nascitur controversia, Cic. Inv. 1, 13, 18; 2, 21, 62.