■ adjective undergoing a reversible change in colour when exposed to light of a particular frequency or intensity.
Derivatives
photochromism noun
Origin
1950s: from photo- + Gk khrōma 'colour' + -ic .
■ adjective undergoing a reversible change in colour when exposed to light of a particular frequency or intensity.
Derivatives
photochromism noun
Origin
1950s: from photo- + Gk khrōma 'colour' + -ic .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004