ISONITROSO-ANTIPYRIN

\ˌa͡ɪsəna͡ɪtɹˈə͡ʊsə͡ʊˌantɪpˈɪɹɪn], \ˌa‍ɪsəna‍ɪtɹˈə‍ʊsə‍ʊˌantɪpˈɪɹɪn], \ˌaɪ_s_ə_n_aɪ_t_ɹ_ˈəʊ_s_əʊ_ˌa_n_t_ɪ_p_ˈɪ_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