Pronunciation: (sub-struk'chur, sub'struk"-), [key]
1. a structure forming the foundation of a building or other construction.
2. the foundations, piers, and abutments upon which the trusses or girders of the spans of a bridge rest.
3. any basic structure or organization.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.