BUTYROSCOPE
\bjˈuːtɪɹˌɒskə͡ʊp], \bjˈuːtɪɹˌɒskəʊp], \b_j_ˈuː_t_ɪ_ɹ_ˌɒ_s_k_əʊ_p]\
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An instrument for ascertaining the proportion of fat in milk. [Gr.]
By Smith Ely Jelliffe