Jus disponendi

Jus disponendi, in the civil law, refers to the right of disposing. An expression used either:

generally, to signify the right of alienation, as historically a married woman would be deprived of the jus disponendi over her separate estate;
specially, in the law relating to sales of goods, where it is often a question whether the vendor of goods has the intention of reserving to himself the jus disponendi; i. e., of preventing the ownership from passing to the purchaser, notwithstanding that he has parted with the possession of the goods.