substruction Meaning, Definition & Usage

Sub*struc"tion noun
Etymology
L. substructio, fr. substruere, substructum, to build beneath; sub under + struere to build.
Definitions
  1. (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.

Webster 1913