1. a polymer that undergoes a chemical change when exposed to light, used in printing, imaging, and manufacturing processes
Usage: technical; commonly used in printing and materials science

Examples

• The printing plate was made from a photopolymer that hardened when exposed to ultraviolet light.
• Photopolymers are essential materials in modern flexographic printing.
• The engineer selected a photopolymer resin for the 3D printing project because of its precision.
• Photopolymer films are used to create detailed circuit board patterns.
• The photopolymer changed color and became solid after the light exposure.