pindexphotochromic./foh-tuh-kroh-mik/US // ˌfoʊ təˈkroʊ mɪk //UK // (ˌfəʊtəʊˈkrəʊmɪk) //光变色,光致变色,光变色的,光致变色剂Definitionsadj.adjective · 形容词1.› capable of darkening or changing color when exposed to light.Level 5More words in p →