The definition of pervasive is something that has a tendency to spread.
An example of pervasive is the Internet's spread throughout the world.
tending to pervade or spread throughout
Having the quality or tendency to pervade or permeate: the pervasive odor of garlic.
Origin of pervasiveFrom Latin pervasus, past participle of pervadere, to pervade; see pervade.
(comparative more pervasive, superlative most pervasive)