(n.) A solid figure with seven sides.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). heptahedron. Retrieved September 21, 2026, from http://smartdefine.org/heptahedron/definitions/2016022 |
| Chicago | Webster's. 2011. "heptahedron" http://smartdefine.org/heptahedron/definitions/2016022 (accessed September 21, 2026). |
| Harvard | Webster's 2011, heptahedron, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/heptahedron/definitions/2016022>. |
| MLA | Webster's. "heptahedron" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/heptahedron/definitions/2016022> |