Also found in: Thesaurus, Medical, Encyclopedia.
Related to actinic ray: actinic radiation
Photochemically active radiation, as of the sun.
a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects.
Switch to new thesaurus
|Noun||1.||actinic ray - electromagnetic radiation that can produce photochemical reactions|
electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
electromagnetic spectrum - the entire frequency range of electromagnetic waves
infrared emission, infrared light, infrared radiation, infrared - electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"