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actinic
(redirected from actinically)

   Also found in: Dictionary/thesaurus, Encyclopedia 0.01 sec.
actinic /ac·tin·ic/ (ak-tin´ik) producing chemical action; said of rays of light beyond the violet end of the spectrum.
ac·tin·ic (k-tnk)
adj.
Of or relating to the chemically active rays of the electromagnetic spectrum.

actinic
[aktin′ik]
Etymology: Gk, aktis, ray
pertaining to radiation, such as sunlight or x-rays.

actinic
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.

actinic 
Pertaining to the chemical activity of radiant energy (especially ultraviolet) on absorption by certain substances. In the eye, the cornea, in particular, but also the lens and retina are most susceptible. See eclipse blindness; solar retinopathy.


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leads to conversion and subsequent accumulation of the endogenous photosensitizer, protoporphyrin IX (PpIX), in actinically damaged or tumorigenic cells.
Kligman regarded wrinkles as "configurational change" resulting from "mechanical stresses acting on lax excessive skin especially in actinically damaged areas".
1), (23) Actinically damaged skin is characterized by accumulation of elastotic material, while in sun-protected areas the number of elastic fibers is decreased.
 
 
 
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