1. 
   Impenetrability
   In metaphysics, impenetrability is the name given to that quality of matter whereby two bodies cannot occupy the same space at the same time. The philosopher John Toland argued that impenetrability and extension were sufficient to define matter, a contention strongly disputed by Gottfried Wilhelm V...
   Found op http://en.wikipedia.org/wiki/Impenetrability
   
   
2. 
   impenetrability
   [n] - resistance to penetration by a liquid 2. [n] - incomprehensibility by virtue of being too dense to understand
   Found op http://www.webdictionary.co.uk/definition.php?query=impenetrability
   
   
3. 
   Impenetrability
   Im·pen`e·tra·bil'i·ty noun [ Confer French 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 ...
   Found op http://www.encyclo.co.uk/webster/I/17
   
   
4. 
   impenetrability
   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. ... Origin: Cf. F. Impenetrabi...
   Found op http://www.mondofacto.com/facts/dictionary?impenetrability
   
   
5. 
   impenetrability
   imperviousness noun the quality of being impenetrable (by people or light or missiles etc.)
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=impenetrability
   
   
6. 
   impenetrability
   noun incomprehensibility by virtue of being too dense to understand
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=impenetrability
   
   
7. 
   Impenetrability
   • (n.) Quality of being impenetrable. • (n.) That property in virtue of which two portions of matter can not at the same time occupy the same portion of space. • (n.) Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.
   Found op http://thinkexist.com/dictionary/meaning/impenetrability/
   
   
8. 
   impenetrability
   
   1. resistance to penetration by a liquid
   2. incomprehensibility by virtue of being too dense to understand
   
   Found op
   
   
9. 
   impenetrability
   1) Impermeability 2) Impermeableness 3) Imperviousness
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/impenetrability/1
   
   

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