Juramentum Voluntarium Law and Legal Definition
Juramentum voluntarium is a term referred in Roman law. It is a voluntary oath. Parties to an action were not required to make such an oath, but when made, the other party was required to answer it under oath. It is a species of appeal to conscience, by which one of the parties to a suit, instead of proving his case, offered to abide by what his adversary should answer under oath.