HYDROCARBOSTYRIL

\hˈa͡ɪdɹəkˌɑːbəstˌɪɹə͡l], \hˈa‍ɪdɹəkˌɑːbəstˌɪɹə‍l], \h_ˈaɪ_d_ɹ_ə_k_ˌɑː_b_ə_s_t_ˌɪ_ɹ_əl]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.