EMBRYOGENESIS

\ˌɛmbɹɪə͡ʊd͡ʒˈɛnɪsˌɪs], \ˌɛmbɹɪə‍ʊd‍ʒˈɛnɪsˌɪs], \ˌɛ_m_b_ɹ_ɪ__əʊ_dʒ_ˈɛ_n_ɪ_s_ˌɪ_s]\
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1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe