substructure

From sub- +‎ structure.

substructure (plural substructures)

1. The supporting part of a structure (either physical or organizational; the foundation).

   Synonym: underbuilding

2. The earth or gravel that the railway tracks are embedded in.
3. (Marxism) Synonym of base (“the forces and relations of production that produce the necessities and amenities of life”)

• superstructure

From sub- +‎ structure.

• IPA^(key): /syp.stʁyk.tyʁ/

substructure f (plural substructures)

1. substructure

• “substructure”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• (Classical) IPA^(key): /sub.struːkˈtuː.re/, [s̠ʊps̠t̪ruːkˈt̪uːrɛ]
• (modern Italianate Ecclesiastical) IPA^(key): /sub.strukˈtu.re/, [subst̪rukˈt̪uːre]

substrūctūre

1. vocative masculine singular of substrūctūrus