actinic ray
noun Physics.
a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects.
QUIZZES
DIVE INTO THIS BALMY SUMMERTIME SPELLING QUIZ
Do you often fall under the spell of the summer season? See if you can really spell your way through it with this quiz of popular summertime words.
Question 1 of 12
Origin of actinic ray
First recorded in 1835–45
Words nearby actinic ray
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020