CHROMOPROTEINS

\kɹˈə͡ʊməpɹˌə͡ʊtiːnz], \kɹˈə‍ʊməpɹˌə‍ʊtiːnz], \k_ɹ_ˈəʊ_m_ə_p_ɹ_ˌəʊ_t_iː_n_z]\
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1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth