Lewis & Short

dispŏsĭtĭo, ōnis, f. [dispono].

  1. I. A regular disposition, arrangement, in oratory, Cic. Inv. 1, 7, 9; id. de Or. 2, 42, 179; Auct. Her. 1, 2, 3; 3, 10, 18; Quint. 3, 3, 1 sq. et saep.; in arch., Vitr. 1, 2; in painting, Plin. 35, 10, 36, § 80; in milit., Veg. A. M. 3, 26; Amm. 24, 6.
  2. II. In post-class. lang., management, ordering, direction, Capitol. Maxim. 9; Sid. Ep. 3, 6 fin.: ultima, testamentary disposition, Cod. 6, 23, 28 prooem.