PROTOCRANIUM

\pɹˌə͡ʊtə͡ʊkɹˈe͡ɪni͡əm], \pɹˌə‍ʊtə‍ʊkɹˈe‍ɪni‍əm], \p_ɹ_ˌəʊ_t_əʊ_k_ɹ_ˈeɪ_n_iə_m]\
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1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.
 
1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth

Word of the day

ammonium chlorid

  • Sal ammoniac, NH4CI, found native volcanic regions small quantities sea water and formed artificially by the direct combination of ammonia hydrochloric acid gas. Used in bronchitis.
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