'Photochemical' definitions:
Definition of 'photochemical'
From: WordNet
adjective
Of or relating to or produced by the effects of light on chemical systems
Definition of 'Photochemical'
From: GCIDE
- Photochemical \Pho`to*chem"ic*al\, a. [Photo- + chemical.] (Chem.) Of or pertaining to chemical changes produced by light; as, the photochemical changes of the visual purple of the retina. [1913 Webster]