adj.
Pronunciation: ˌ f ō -t ə - ' kr ō -mik
Function: adjective
Etymology: phot- + chrom- + 1 -ic
Date: 1953
1 : capable of changing color on exposure to radiant energy (as light) < photochromic glass>
2 : of, relating to, or utilizing the change of color shown by a photochromic substance <a photochromic process>
– pho · to · chro · mism \ - ˌ mi-z ə m \ noun