actinic

/ækˈtɪnɪk/
adjective
  1. Relating to or caused by light, especially ultraviolet or other radiation that can cause chemical reactions.
    • Actinic light from the sun can fade the color of fabrics over time.
    • The photographer used a special filter to block actinic rays during the shoot.
    • Sunscreen helps protect your skin from actinic damage caused by the sun.
What does "actinic" mean? | whatsthatwordmean | whatsthatwordmean