NAPHTHOPYRIN

\nˈafθəpˌɪɹɪn], \nˈafθəpˌɪɹɪn], \n_ˈa_f_θ_ə_p_ˌɪ_ɹ_ɪ_n]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe