impenetrability
NounOpen English WordNet
Noun (2)
- the quality of being impenetrable (by people or light or missiles etc.)Synonyms: imperviousnessOpposite penetrabilityType of qualityKinds waterproofness, enigmaticness, steamtightness
- incomprehensibility by virtue of being too dense to understandSynonyms: impenetrablenessType of incomprehensibility
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Webster's Dictionary (1913)
Im·pen′e·tra·bil′i·ty noun
Origin: Cf. F. impénétrabilité.
1. Quality of being impenetrable.
2. Physics That property in virtue of which two portions of matter can not at the same time occupy the same portion of space.
3. Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54