trichromaticPronunciation: /ˌtrʌɪkrəˈmatɪk/Definition of trichromatic adjective having or using three colours. having normal colour vision, which is sensitive to all three primary colours. Derivatives trichromatismPronunciation: /-ˈkrəʊmətɪz(ə)m/ noun trichromatic in other Oxford dictionaries Definition of trichromatic in the US English dictionary