Latin. An agreement where the seller received the benefit of the lex commissoria. The lex commissoria was the name given to a clause often inserted among the Romans in conditions of sale, whereby the seller reserved right to himself to rescind the sale, if the purchaser did not make payment of the price of the subject sold within a certain time. This condition did not make the purchase a conditional one ; on the contrary, the sale was regarded as absolute, but subject to be rescinded at the pleasure of the seller, if the price was not paid by the time specified; and, ...