Substrúctio, ônis, f. g. Verba. Cic.An vnderpinning or groundselling of an house. A building vnder, or making of a foundation vnder.
Lewis and Short: Latin dictionary
substructĭo, ōnis, f. [substruo], an under - building, foundation, substructure, Vitr. 1, 5: maxima debet esse cura substructionum, id. 6, 11: maximae, Caes. B. C. 2, 25: insanae, Cic. Mil. 20, 53; 31, 85; Liv. 38, 28; Front. Aquaed. 3, 5 sq.; Col. 1, 5, 9; v. substruo fin.
