actinic ray

noun Physics.

a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects.

Origin of actinic ray

First recorded in 1835–45

Words nearby actinic ray

actinic cheilitis, actinic dermatitis, actinic elastosis, actinic granuloma, actinic keratosis, actinic ray, actinide, actinide series, actiniform, actinin, actinism