Black's Law Dictionary (2nd edition)dictionaries

Fortior

Lat. Stronger. A term ap-plled, in the latv of evidence, to that specles of presumption, arising from facts shown in evidence, which is strong enough to shift the burden of proof to the opposite party. Bur-rill, Circ. Ev. 64, 66

Source: Black’s Law Dictionary 2nd Ed (1910)