名詞 dichroism:

1. pleochroism of a crystal so that it exhibits two different colors when viewed from two different directions

di.chro.ism

n.Chemistry （名詞）【化學(xué)】
The property possessed by some solutions of showing different colors at different concentrations.
二向色性：某些晶體在沿不同軸觀看時，而呈現(xiàn)兩種不同的顏色的性質(zhì)
The property possessed by some crystals of exhibiting two different colors when viewed along different axes.
雙色性：某些溶液由于濃度不同而呈現(xiàn)不同顏色的性質(zhì)