| penetrability |
| penetrability | (n) the quality of being penetrable (by people or light or missiles etc.), Syn. perviousness, Ant. imperviousness, impenetrability |
| Penetrability | n. [ Cf. F. pénétrabilité. ] The quality of being penetrable; susceptibility of being penetrated, entered, or pierced. Cheyne. [ 1913 Webster ] |