Etymology
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impingement (n.)

1670s, "act of impinging;" see impinge + -ment.

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Definitions of impingement

impingement (n.)
influencing strongly;
they resented the impingement of American values on European culture
Synonyms: encroachment / impact
impingement (n.)
a sharp collision produced by striking or dashing against something;
Synonyms: impaction
From wordnet.princeton.edu