catalysis

noun
ca·​tal·​y·​sis | \ kə-ˈta-lə-səs How to pronounce catalysis (audio) \
plural catalyses\ kə-​ˈta-​lə-​ˌsēz How to pronounce catalyses (audio) \

Definition of catalysis

: a modification and especially increase in the rate of a chemical reaction induced by material unchanged chemically at the end of the reaction

First Known Use of catalysis

1836, in the meaning defined above

History and Etymology for catalysis

Greek katalysis dissolution, from katalyein to dissolve, from kata- + lyein to dissolve, release — more at lose

Keep scrolling for more

Learn More about catalysis

Statistics for catalysis

Look-up Popularity

Time Traveler for catalysis

The first known use of catalysis was in 1836

See more words from the same year

Keep scrolling for more

More Definitions for catalysis

catalysis

noun
ca·​tal·​y·​sis | \ kə-ˈtal-ə-səs How to pronounce catalysis (audio) \
plural catalyses\ -​ˌsēz How to pronounce catalyses (audio) \

Medical Definition of catalysis

: a change and especially increase in the rate of a chemical reaction induced by a catalyst

More from Merriam-Webster on catalysis

Rhyming Dictionary: Words that rhyme with catalysis

Britannica.com: Encyclopedia article about catalysis

Comments on catalysis

What made you want to look up catalysis? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

characterized by aphorism

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!