EQUIMOMENTAL

\ˌiːkwɪmə͡ʊmˈɛntə͡l], \ˌiːkwɪmə‍ʊmˈɛntə‍l], \ˌiː_k_w_ɪ_m_əʊ_m_ˈɛ_n_t_əl]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.