[ foh-toh-ak-tuh-vey-shuh n ]
/ ˌfoʊ toʊˌæk təˈveɪ ʃən /
the activation or control of a chemical, chemical reaction, or organism by light, as the activation of chlorophyll by sunlight during photosynthesis.
CAN YOU ACE THIS QUIZ ABOUT “COMPLIMENT” VS. “COMPLEMENT”?
Take this quiz to see if you really know the difference between “compliment” and “complement"!
Question 1 of 11
“Compliment” and “complement” had a shared meaning a long time ago, but today they are no longer interchangeable.
Origin of photoactivation
1920–25; photo- + activation
OTHER WORDS FROM photoactivationpho·to·ac·tive, adjectivepho·to·ac·tiv·i·ty, noun
Words nearby photoactivation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for photoactive
/ (ˌfəʊtəʊˈæktɪv) /
(of a substance) capable of responding to light or other electromagnetic radiation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012