(n.) Underbuilding; the foundation or any preliminary structure intended to raise the lower floor or basement of a building above the natural level of the ground.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Substruction. Retrieved September 20, 2026, from http://smartdefine.org/substruction/definitions/2067958 |
| Chicago | Webster's. 2011. "Substruction" http://smartdefine.org/substruction/definitions/2067958 (accessed September 20, 2026). |
| Harvard | Webster's 2011, Substruction, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/substruction/definitions/2067958>. |
| MLA | Webster's. "Substruction" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/substruction/definitions/2067958> |