1. Transmitting or allowing the passage of actinic rays (ultraviolet or other radiation that produces chemical effects).
Usage: technical; chiefly scientific or photographic contexts

Examples

• The diactinic glass allowed ultraviolet light to pass through for the photochemical experiment.
• Photographers selected diactinic filters to control the transmission of actinic radiation.
• The diactinic properties of the lens made it suitable for scientific imaging applications.