pho·to·chem·i·cal
adjective/ˌfəʊtəʊˈkemɪkl/
/ˌfəʊtəʊˈkemɪkl/
(chemistry)- caused by or relating to the chemical action of light
光化作用的;光化学的 - photochemical smog
光化烟雾
Oxford Collocations DictionaryPhotochemical is used with these nouns:- smog
- photochemical smog