ACHROMATISM
\ˈakɹə͡ʊmətˌɪzəm], \ˈakɹəʊmətˌɪzəm], \ˈa_k_ɹ_əʊ_m_ə_t_ˌɪ_z_ə_m]\
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By DataStellar Co., Ltd
By Daniel Lyons
By Willam Alexander Newman Dorland