noun
- The quality of being impenetrable (by people or light or missiles etc..
- synonyms: imperviousness
- Incomprehensibility by virtue of being too dense to understand.
- synonyms: impenetrableness
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). impenetrability. Retrieved September 20, 2026, from http://smartdefine.org/impenetrability/definitions/1210630 |
| Chicago | WordNet. 2010. "impenetrability" http://smartdefine.org/impenetrability/definitions/1210630 (accessed September 20, 2026). |
| Harvard | WordNet 2010, impenetrability, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/impenetrability/definitions/1210630>. |
| MLA | WordNet. "impenetrability" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/impenetrability/definitions/1210630> |