actinic
ac·tin·ic
adj \ak-ˈti-nik\Definition of ACTINIC
: of, relating to, resulting from, or exhibiting chemical changes produced by radiant energy especially in the visible and ultraviolet parts of the spectrum <actinic light> <actinic keratosis>
— ac·tin·i·cal·ly \-ni-k(ə-)lē\ adverb
First Known Use of ACTINIC
1844
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