| 释义 |
dichromatism|daɪˈkrəʊmətɪz(ə)m|
[f. as prec.: see -ism.]
1. The quality or fact of being dichromatic.
1884Coues Key to N.A. Birds (ed. 2) 656 Remarkable differences of plumage in many cases, constituting dichromatism, or permanent normal difference in color.
2. Ophthalm. Defective colour vision in which only two (rather than three) pure colours, in different combinations, are sufficient to produce a colour indistinguishable from any perceived.
1909in Webster. 1910Proc. R. Soc. B. LXXXII. 463 The defect which has caused the non-perception of certain red rays has not caused the dichromatism. 1959New Scientist 30 Apr. 972/2 In dichromatism, the colour-blind subject requires only two primaries in order to match any spectral colour. |