HEXAGONAL
\hɛksˈaɡənə͡l], \hɛksˈaɡənəl], \h_ɛ_k_s_ˈa_ɡ_ə_n_əl]\
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1874
- Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.
1790
- A Complete Dictionary of the English Language
By Thomas Sheridan