Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun substructure

2 senses of substructure

Sense 1
infrastructure, substructure -- (the basic structure or features of a system or organization)
       => structure -- (the manner of construction of something and the arrangement of its parts; "artists must study the structure of the human body"; "the structure of the benzene molecule")

Sense 2
foundation, base, fundament, foot, groundwork, substructure, understructure -- (lowest support of a structure; "it was built on a base of solid rock"; "he stood at the foot of the tower")
       => support -- (supporting structure that holds up or provides a foundation; "the statue stood on a marble support")