PROTOXID

\pɹˈə͡ʊtə͡ʊksˌɪd], \pɹˈə‍ʊtə‍ʊksˌɪd], \p_ɹ_ˈəʊ_t_əʊ_k_s_ˌɪ_d]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland