a process that repairs DNA damaged by ultraviolet light using an enzyme that requires visible light.
Origin of photoreactivation
1945–50; photo- + reactivation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
The activation by light of something previously inactive or inactivated.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.