photosensitive
adjective/ˌfəʊtəʊˈsensətɪv/
/ˌfəʊtəʊˈsensətɪv/
(specialist)- reacting to light, for example by changing colour or producing an electrical signal
- a photosensitive device
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photosensitive
Definition of photosensitive adjective from the Oxford Advanced Learner's Dictionary