substructure

1 ENTRIES FOUND:
substructure /ˈsʌbˌstrʌktʃɚ/ noun
plural substructures
substructure
/ˈsʌbˌstrʌktʃɚ/
noun
plural substructures
Britannica Dictionary definition of SUBSTRUCTURE
[count]
: a supporting part or structure that is below something — often used figuratively — compare superstructure