[ 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.
"EVERYDAY" VS. "EVERY DAY" QUIZ: IS IT ONE WORD OR TWO?
An everyday activity is one you do every day. (Thanks, English.) Practice using "everyday," one word, and "every day," two words, in this fun quiz with … everyday example sentences!
Question 1 of 16
“Everyday" is an adjective that describes things that happen habitually or items that are normal items or events.
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