Meaning of understructure

un•der•struc•ture

Pronunciation: (un'dur-struk"chur), [key]
— n.
  1. a structure serving as a support; a base or foundation: The building has a strong understructure.
  2. any thing, condition, etc., establishing support; a basis: an argument that rests on a sound understructure of knowledge.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: