photocatalysis

[ foh-toh-kuh-tal-i-sis ]
/ ˌfoʊ toʊ kəˈtæl ɪ sɪs /

noun, plural pho·to·ca·tal·y·ses [foh-toh-kuh-tal-i-seez] /ˌfoʊ toʊ kəˈtæl ɪˌsiz/. Chemistry.

the acceleration or retardation of the reaction rate in chemical reactions by light.

QUIZZES

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 photocatalysis

First recorded in 1910–15; photo- + catalysis

OTHER WORDS FROM photocatalysis

pho·to·cat·a·lyt·ic [foh-toh-kat-l-it-ik] /ˌfoʊ toʊˌkæt lˈɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for photocatalysis

photocatalysis
/ (ˌfəʊtəʊkəˈtælɪsɪs) /

noun plural -ses (-siːz)

the alteration of the rate of a chemical reaction by 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