substructure
subst·ruc·ture
noun
1.
the basic structure or features of a system or organization
2.
- “it was built on a base of solid rock”
- “he stood at the foot of the tower”
Origin
From sub- + structure.
Related words
Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.