Decisory oatb
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In the civil law. An oath which one of the parties defers or refers back to the other for the decision of the cause.
—-Extrajudicial oatb. One not taken in any judicial proceeding, or without any authority or requirement of law, though taken formally bsfore a proper person.
Defined under Oath in Black's Law Dictionary.