'Encroachment' definitions:

Definition of 'encroachment'

From: WordNet
noun
Any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts" [syn: invasion, encroachment, intrusion]
noun
Entry to another's property without right or permission [syn: trespass, encroachment, violation, intrusion, usurpation]
noun
Influencing strongly; "they resented the impingement of American values on European culture" [syn: impingement, encroachment, impact]

Definition of 'Encroachment'

From: GCIDE
  • Encroachment \En*croach"ment\, n.
  • 1. The act of entering gradually or silently upon the rights or possessions of another; unlawful intrusion. [1913 Webster]
  • An unconstitutional encroachment of military power on the civil establishment. --Bancroft. [1913 Webster]
  • 2. That which is taken by encroaching on another. [1913 Webster]
  • 3. (Law) An unlawful diminution of the possessions of another. [1913 Webster]