HYPOS

\hˈa͡ɪpə͡ʊz], \hˈa‍ɪpə‍ʊz], \h_ˈaɪ_p_əʊ_z]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.
 
1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop