SUBSTRUCTION

Sub‐struc″tion (?), n. [[L. substructio, fr. substruere, substructum, to build beneath; sub under + struere to build.]] (Arch.) Underbuilding; the foundation, or any preliminary structure intended to raise the lower floor or basement of a building above the natural level of the ground. It is a magnificent strong building, with a substruction very remarkable. Evelyn.