Lex Commissoria
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In Roman law. A law by which a debtor and creditor might agree, where a thing had been pledged to the latter to secure the debt, that, if the debtor did not pay at the day, the pledge should become the absolute property of the creditor. This was abolished by a law of Constantine.
Kent, Comm. 583.
A law according to which a seller might stipulate that, if the price of the thiner sold were not paid within a certain time, the sale should be void.
Dig. 18. 3.