SPONTANEOUS VERSION

\spɒntˈe͡ɪni͡əs vˈɜːʃən], \spɒntˈe‍ɪni‍əs vˈɜːʃən], \s_p_ɒ_n_t_ˈeɪ_n_iə_s v_ˈɜː_ʃ_ə_n]\
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1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe