Jus in re

JUS IN RE, property, title. The right which a man has in a thing by which it belongs to him. It is a complete and full right. Poth. Dr. de Dora. de Prop. n. 1.
     2. This phrase of the civil law conveys the same idea as thing, in possession does with us. 4 Woodes. Lect. 235; vide 2 P. Wins. 491; 1 Mason, 221; 1 Story, Eq. Jur. Sec. 506; 2 Story, Eq. Jur. Sec. 1215; Story, Ag. Sec. 352; and Jus ad rem.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.