" Architecture . The foundations or substructure of a building or other construction, especially (in classical architecture) a substructure which raises the floor of a building above ground level", Early 17th cent.; earliest use found in Henry Wotton (1568–1639), diplomat and writer. From classical Latin substructiōn-, substructiō building of a foundation or substructure, supporting structure, substructure from substruct-, past participial stem of substruere + -iō.[substruction etymology, substruction origin, 英语词源]