v. t. [ See Substruction. ] To build beneath something; to lay as the foundation. [ R. ] [ 1913 Webster ]
He substructs the religion of Asia as the base. Emerson. [ 1913 Webster ]
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. [ 1913 Webster ]
It is a magnificent strong building, with a substruction very remarkable. Evelyn. [ 1913 Webster ]
n. [ Pref. sub- + structure. ]