actinic radiation

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actinic radiation

Ionizing electromagnetic radiation that can produce chemical changes, e.g., the damage done to skin by ultraviolet sunlight.
See also: radiation

ac·tin·ic ra·di·a·tion

(ak-tinik rādē-āshŭn)
Light radiation toward and beyond theviolet end of the spectrum.


producing chemical action.

actinic 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.
actinic radiation
said of rays of light beyond the violet end of the spectrum.