Search Result for "penetrability": 
Wordnet 3.0

NOUN (1)

1. the quality of being penetrable (by people or light or missiles etc.);
[syn: penetrability, perviousness]



The Collaborative International Dictionary of English v.0.48:

Penetrability \Pen`e*tra*bil"i*ty\, n. [Cf. F.
   p['e]n['e]trabilit['e].]
   The quality of being penetrable; susceptibility of being
   penetrated, entered, or pierced. --Cheyne.
   [1913 Webster]


WordNet (r) 3.0 (2006):

penetrability
    n 1: the quality of being penetrable (by people or light or
         missiles etc.) [syn: penetrability, perviousness] [ant:
         impenetrability, imperviousness]