1. a molecule that exists in an excited state and is formed by the combination of two identical atoms or molecules
Usage: chemistry; physics

Examples

• The excimer laser produces ultraviolet light through excited argon fluoride molecules.
• Excimer formation occurs when two noble gas atoms combine in an excited state.
• The excimer exists only briefly before dissociating back into separate atoms.
• Scientists use excimer lasers for precise medical procedures like eye surgery.
• The excimer’s short lifetime makes it useful for generating specific wavelengths of light.
• Xenon chloride excimers are commonly used in industrial laser applications.