Source : Webster's Revised Unabridged Dictionary (1913)

Pervasive \Per*va"sive\, a.
   Tending to pervade, or having power to spread throughout; of
   a pervading quality. ``Civilization pervasive and general.''
   --M. Arnold.

Source : WordNet®

pervasive
     adj 1: spread throughout; "a pervasive anxiety overshadows the
            triumphs of individuals" [syn: {pervading}]
     2: spreading throughout; "armed with permeative irony...he
        punctures affectations"; "the pervasive odor of garlic";
        "an error is pervasive if it is material to more than one
        conclusion" [syn: {permeant}, {permeating}, {permeative}]