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substructure

 
Noun substructure has 2 senses
  1. infrastructure, substructure - the basic structure or features of a system or organization
    --1 is a kind of structure
    --1 is a part of system
  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"
    --2 is a kind of support
    --2 is a part of structure, construction
    --2 has particulars: bed; raft foundation
substract substraction substractive substrarum substrate substrate substratum substring substructure subsume subsumed subsuming subsumption subsumtion subsurface subsymbolic subsysem

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