Construction

—1. Building up or erecting; the erection of a structure from previously formed elements. 2. In architecture, the planning, designing and erection of a structure; the setting up of plant and all proce es preparatory to active productive operation. 3. In civil engineering, the building of such ublic works as roads, railways and canals, as Differentiated from the subsequent work of maintaining and repairing them. 4. In mathematics, the building up of a thesis or the delineation of certain figures,in accordance with previously demonstrated principles, whereby - the solution of a problem may be attained or some theorem demonstrated to be correct; this is especially applied in geometry.