[suhb-struhk-shuh
n] 
| a foundation or substructure. |
| sub·struc·tion (sŭb-strŭk'shən) n. A foundation; a substructure. [Latin substrūctiō, substrūctiōn-, from substrūctus, past participle of substruere, to build beneath : sub-, sub- + struere, to build, pile up; see ster-2 in Indo-European roots.] sub·struc'tion·al adj. |