POLARISCOPE

\pˈə͡ʊlɑːɹˌɪskə͡ʊp], \pˈə‍ʊlɑːɹˌɪskə‍ʊp], \p_ˈəʊ_l_ɑː_ɹ_ˌɪ_s_k_əʊ_p]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe