n. The state or quality of being present in all parts of a particular thing or place.
The Century Dictionary and Cyclopedia
n. The character of being pervasive.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of filling or spreading throughout
Word Usage
"Stories and their pervasiveness is the kind of stuff which keeps changing pending the immediacy of transitory needs the mind is quick to invent to keep the story interesting and in control of you."