1. of, relating to, or produced by the chemical action of light
Usage: commonly used in scientific and technical contexts

Examples

• Photochemical reactions are essential in photosynthesis, where plants convert light energy into chemical energy.
• The photochemical smog that forms over cities is created when sunlight reacts with air pollutants.
• Scientists study photochemical processes to develop more efficient solar cells.
• Photochemical decomposition of water could be a key to producing clean hydrogen fuel.
• The photochemical properties of certain dyes make them useful in imaging applications.