1. having been exposed beforehand or in advance
Usage: often used in technical or scientific contexts

1. past tense and past participle of preexpose; to expose in advance or beforehand
Usage: technical usage, particularly in photography and materials science

Examples

• The preexposed film was already sensitive to light before the photographer began the session.
• The material had been preexposed to UV radiation to test its durability.
• Preexposed samples showed different results than the control group.
• The technician preexposed the substrate to ensure consistent results.
• Preexposed surfaces required special handling to prevent further degradation.