ORTHOCHROMATIC Meaning of ORTHOCHROMATIC in English orthochromatic BrE AmE ˌɔːθ əʊ krə ʊ ˈmæt ɪk ◂ AmE \ ˌɔːrθ ə kroʊ ˈmæt̬ ɪk▷ orthochromatic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012