iridescent/ˌɪrɪˈdesnt; ˌɪrə`dɛsnt/ adj(fml 文)1 showing colours like those of the rainbow 彩虹色的.2 changing colour as its position changes （因位置改动）变色的 jewels sparkling with iridescent colours 闪烁著奇光异彩的珠宝.
牛津英汉双解词典