- actinic radiation, actinic ray - electromagnetic radiation that can produce photochemical reactions
--1 is a kind of electromagnetic radiation, electromagnetic wave, nonparticulate radiation
--1 is a part of electromagnetic spectrum
--1 has particulars:infrared, infrared light, infrared radiation, infrared emission; light, visible light, visible radiation; ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV