substructure
From WikiWord, the free dictionary
English
Definitions
noun
- The supporting part of a structure (either physical or organizational; the foundation).
- The earth or gravel that the railway tracks are embedded in.
Related words
Synonyms
underbuildingunderstructurebasegroundworkfoundationfundamentfootsubgradeinfrastructurebasisundersupportunderframeworksuprastructuresubterrainsubshaftunderstratumsubstratum