Lat. Interest. The interest of money; also an interest in lands. Interesse termini. An interest in a term. That species of interest or property which a lessee for years acquires in the lands demised to him, before he has actually become possessed of those lands; as distinguished from that property or interest vested in him by the demise, and also reduced into possession by an actual entry upon the lands and the assumption of ownership therein, and which is then termed an “estate for years.” Brown. Pro interesse sno. For his own interest; according to, or to the extent of, his individual interest. Used (in practice) to describe the intervention of a party who comes into a suit for the purpose of protecting interests of his own which may be involved in the dispute between the principal parties or which may be affected by the settlement of their contention.