Word Study
perviousness
WORDNET DICTIONARY
Noun perviousness has 1 sense
- perviousness(n = noun.attribute) penetrability - the quality of being penetrable (by people or light or missiles etc.); Array is a kind of quality
Antonym: imperviousness
Derived form adjective pervious1
CIDE DICTIONARY
perviousness, n.
The quality or state of being pervious; as, the perviousness of glass. Boyle. [1913 Webster]
For further exploring for "perviousness" in Webster Dictionary Online