MECHANICO-CHEMICAL

\mɪkˈanɪkˌə͡ʊkˈɛmɪkə͡l], \mɪkˈanɪkˌə‍ʊkˈɛmɪkə‍l], \m_ɪ_k_ˈa_n_ɪ_k_ˌəʊ_k_ˈɛ_m_ɪ_k_əl]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.