Onns probandi
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Burden of proving; the burden of proof. The strict meaning of the term "onus probandf' is that, if no evidence is adduced by the party on whom the burden is cast, the issue must be found against him. Davis v. Rogers, 1 Houst. (Del.) 44.
Defined under Onus in Black's Law Dictionary.