actinic dermatitis n.
Dermatitis caused by exposure to actinic radiation, such as sunlight or x-rays.
- Actinic elastosis
actinic elastosis actinic elastosis n. See colloid acne.
- Actinic keratosis
actinic keratosis actinic keratosis n. A warty lesion, often premalignant, occurring on the sun-exposed skin of the face or hands, especially of light-skinned persons. Also called senile keratosis.
- Actinic granuloma
actinic granuloma actinic granuloma n. An annular eruption on sun-exposed skin that microscopically shows phagocytosis of dermal elastic fibers by giant cells and histiocytes.
- Actinic ray
a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects. Historical Examples Elusive, delicate, alluring—it is the actinic ray that imparts vitality. Little Journeys to the Homes of the Great, Vol. 1 of 14 Elbert Hubbard The question is, then, what teaching concern in America supplies the best quality of […]