EXPROMMISSOR, civil law. By this term is understood the person who alone
becomes bound for the debt of another, whether the latter were obligated or
not. He differs from a surety, who is bound together with his principal.
Dig. 12, 4, 4; Dig. 16, 1, 13; Id. 24, 3, 64, 4; Id. 38, 1, 37, 8.