OBJECTIVE VERTIGO

\ɒbd͡ʒˈɛktɪv vˈɜːtɪɡˌə͡ʊ], \ɒbd‍ʒˈɛktɪv vˈɜːtɪɡˌə‍ʊ], \ɒ_b_dʒ_ˈɛ_k_t_ɪ_v v_ˈɜː_t_ɪ_ɡ_ˌəʊ]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe