IMPINGUATION

\ɪmpˌɪŋɡjuːˈe͡ɪʃən], \ɪmpˌɪŋɡjuːˈe‍ɪʃən], \ɪ_m_p_ˌɪ_ŋ_ɡ_j_uː_ˈeɪ_ʃ_ə_n]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.