Dictionary.com
Thesaurus.com

photocatalysis

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

noun

Chemistry.
photocatalyses plural
  1. the acceleration or retardation of the reaction rate in chemical reactions by light.


photocatalysis British  
/ ˌfəʊtəʊkəˈtælɪsɪs /

noun

  1. 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

Other Word Forms

Derived Forms

Inflected Forms

noun

Etymology

Origin of photocatalysis

First recorded in 1910–15; photo- + catalysis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Standard computational studies of photocatalysts typically focus on ground-state properties and neglect excited-state effects, despite the fact that photocatalysis is inherently driven by photoexcited charge carriers. Specifically, we employ many-body perturbation theory methods."

From Science Daily • Mar. 16, 2026

The Halas group has been developing aluminum nanoparticles for plasmonic photocatalysis reactions such as decomposition of dangerous chemical warfare agents and efficient production of commodity chemicals.

From Science Daily • Mar. 5, 2024

The MOFs in this experiment rely on photocatalysis.

From Science Daily • Mar. 5, 2024

As the microrobots adhere to plastic, photocatalysis also produces charged molecules.

From Scientific American • Sep. 14, 2021

Orlov and Raff have both published papers showing that as part of the chemical process that occurs during photocatalysis, dangerous molecules can be temporarily created.

From Newsweek

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "photocatalysis" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com