actinic

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(ăk-tĭn'ĭk) pronunciation
adj.
Of, relating to, resulting from, or showing actinism.

actinically ac·tin'i·cal·ly adv.

Pertaining to shortwave electromagnetic radiation capable of initiating photochemical reactions, as in photography or the fading of pigments. Because of the particularly strong action of ultra-violet radiation on photochemical processes, the term has come to be almost synonymous with ultraviolet, as in actinic rays.


describing electromagnetic radiation, especially higher frequencies of visible light and UV radiation, capable of initiating photochemical reactions.

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Producing chemical action.

  • a. dermatitis — that produced by exposure to actinic radiation, such as that from the sun, ultraviolet waves, or x- or gamma radiation. Called also dermatitis actinica.
  • a. radiation — said of rays of light beyond the violet end of the spectrum.

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