utilizev. t.[Cf. F. utiliser.] To make useful; to turn to profitable account or use; to make use of; as, to utilize the whole power of a machine; to utilize one's opportunities.()In former ages, the mile-long corridors, with their numerous alcoves, might have been utilized as . . . dungeons. (Hawthorne.)[L., as you possess.]()1. (Internat. Law) The basis or principle of a treaty which leaves belligerents mutually in possession of what they have acquired by their arms during the war.(Brande & C.)2. (Roman Law) A species of interdict granted to one who was in possession of an immovable thing, in order that he might be declared the legal possessor.(Burrill.)