Impingement

im·pinge  (m-pnj)

v. im·pinged, im·ping·ing, im·ping·es

v.intr.

1. To collide or strike: Sound waves impinge on the eardrum.

2. To encroach; trespass: Do not impinge on my privacy.

v.tr.

To encroach upon: "One of a democratic government's continuing challenges is finding a way to protect . . . secrets without impinging the liberties that democracy exists to protect" Christian Science Monitor.

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[Latin impingere : in-, against; see in-² + pangere, to fasten; see pag- in Indo-European roots.]

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im·pingement n.

im·pinger n.

Thesaurus

Noun	1.	impingement - influencing strongly; "they resented the impingement of American values on European culture" encroachment, impact influence - causing something without any direct or apparent effort
	2.	impingement - a sharp collision produced by striking or dashing against something impaction crash, smash - the act of colliding with something; "his crash through the window"; "the fullback's smash into the defensive line"