IMPINGING
contact, impinging, striking
(noun) the physical coming together of two or more things; “contact with the pier scraped paint from the hull”
Source: WordNet® 3.1
Verb
impinging
present participle of impinge
Source: Wiktionary
IMPINGE
Im*pinge", v. t. [imp. & p. p. Impinged; p. pr. & vb. n. Impinging.]
Etym: [L. impingere; pref. im- in + pangere to fix, strike; prob.
akin to pacisci to agree, contract. See Pact, and cf. Impact.]
Definition: To fall or dash against; to touch upon; to strike; to hit; to
ciash with; -- with on or upon.
The cause of reflection is not the impinging of light on the solid or
impervious parts of bodies. Sir I. Newton.
But, in the present order of things, not to be employed without
impinging on God's justice. Bp. Warburton.
Source: Webster’s Unabridged Dictionary 1913 Edition