1. A light-sensitive chemical material used in semiconductor manufacturing and printing to transfer a pattern onto a substrate by selective exposure to light.
Usage: technical; commonly used in electronics and microelectronics industries

Examples

• The engineer applied a thin layer of photoresist to the silicon wafer before exposure.
• Photoresist is essential in the photolithography process used to create computer chips.
• The UV light hardened the photoresist in the exposed areas of the circuit pattern.
• Different types of photoresist are used depending on the wavelength of light available.
• After development, the photoresist protects the underlying material during etching.