Pervasiveness generally refers to something being present in all parts of a particular thing or place, and is used as a term in:
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Pervasiveness doctrine In broadcast law (particularly within U.S. law), the pervasiveness doctrine is the doctrine stating that media content of broadcasts is subject to regulation because broadcast radio waves are available to anyone and therefore "uniquely pervasive" ...
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Pervasive developmental disorder
The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), is a group of disorders characterized by delays in the development of multiple basic functions including socialization and co ...
, emphasizing the affection of multiple basic functions affected
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