PORTIO INTERMEDIA

\pˈɔːtɪˌə͡ʊ ˌɪntəmˈiːdiːə], \pˈɔːtɪˌə‍ʊ ˌɪntəmˈiːdiːə], \p_ˈɔː_t_ɪ__ˌəʊ ˌɪ_n_t_ə_m_ˈiː_d_iː__ə]\
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1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland