actinic ray

actinic ray

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

Origin:
1835–45

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To actinic ray
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature