Search Result for "substructure": 
Wordnet 3.0

NOUN (2)

1. the basic structure or features of a system or organization;
[syn: infrastructure, substructure]

2. lowest support of a structure;
- Example: "it was built on a base of solid rock"
- Example: "he stood at the foot of the tower"
[syn: foundation, base, fundament, foot, groundwork, substructure, understructure]



The Collaborative International Dictionary of English v.0.48:

Substructure \Sub*struc"ture\, n. [Pref. sub- + structure.]
   1. (Arch.) Same as Substruction.
      [1913 Webster]

   2. An under structure; a foundation; groundwork.
      [1913 Webster]


WordNet (r) 3.0 (2006):

substructure
    n 1: the basic structure or features of a system or organization
         [syn: infrastructure, substructure]
    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,
       substructure, understructure]