Compáctio, onis, f. g. Verbale: vt compactio membrorum. Ci. A ioyning or setting togither.
Lewis and Short: Latin dictionary
compactĭo, ōnis, f. [compingo]. I. In abstr., a joining together: membrorum, Cic. Fin. 5, 11, 33.— II. In concr., the things that are joined together, a structure, frame, Vitr. 10, 15, 2 Schneid.