Found 2 items, similar to substructure.
English → English (WordNet) Definition: substructure substructure n 1: the basic structure or features of a system or organization [syn: infrastructure] 2: lowest support of a structure; “it was built on a base of solid rock”; “he stood at the foot of the tower” [syn: foundation, base, fundament, foot, groundwork, understructure]
English → English (gcide) Definition: Substructure Substructure \Sub*struc"ture\, n. [Pref. sub- + structure.] 1. (Arch.) Same as Substruction. [1913 Webster] 2. An under structure; a foundation; groundwork. [1913 Webster]