ISOPEPSIN
\ˈa͡ɪsə͡ʊppsˌɪn], \ˈaɪsəʊppsˌɪn], \ˈaɪ_s_əʊ_p_p_s_ˌɪ_n]\
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By Oddity Software
By Noah Webster.
By Alexander Duane
By Willam Alexander Newman Dorland