(actinic)
61actinic radiation — see under ray …
62ACTINIC RAYS — non luminous rays of higher frequency than the luminous rays …
63actinic rays — electromagnetic radiation (waves composed of undulating electrical fields and magnetic fields) …
64actinic ray — actin′ic ray′ n. phs a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects • Etymology: 1835–45 …
65actinic ray — /ækˌtɪnɪk ˈreɪ/ (say ak.tinik ray) noun a ray of electromagnetic radiation, such as ultraviolet radiation, able to cause chemical changes in exposed materials …
66actinic keratosis — A precancerous condition of thick, scaly patches of skin. Also called solar keratosis and senile keratosis …
67actinic dermatitis — noun dermatitis caused exposure to sunlight • Hypernyms: ↑dermatitis …
68actinic keratosis — noun an overgrowth of skin layers resulting from extended exposure to the sun • Hypernyms: ↑keratosis …
69actinic focus — noun : the focus at which the chemically most effective rays as distinguished from the visually most effective are brought together (as by a lens) called also chemical focus …
70actinic glass — noun : glass that transmits light of high visibility (as green) but reduces the intensity of both infrared and ultraviolet and is often used for protecting the eyes of industrial workers …