HomeServicesBlogDictionariesContactSpanish Course
Back to search

Catalyst

Noun CEFR B2
ˈkæt.ɪ.lɪst

Definitions

  1. A substance that increases the rate of a chemical reaction without being consumed in the process.
  2. Something that encourages progress or change.
  3. An inciting incident that sets the successive conflict into motion.
  4. A catalytic converter.
  5. An object that facilitates the casting of a spell (such as a magic wand).

Equivalents

32 more languages

Examples

“Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine⟳ the pattern of chemical transformations.”
“Economic development and integration are working as a catalyst for peace.”
“It was a morning baptized by my first cup of coffee, freshly brewed over a gravel-bar fire, while they celebrated with the stronger catalyst of sour-mash whiskey in their fishing-vest cups.”
“Israel's fear for the reactor—rather than Egypt's of it—was the greater catalyst for war.”
“Rosa Parks was a true catalyst for change⟳ and she was only one person. Hearing about Rosa Parks and her protest⟳ showed me that there is hope⟳ for me and all the students in Ms. G's classes to truly be catalysts for change⟳.”
“He [countertenor Anthony Roth Constanzo] also enjoys being the catalyst whereby opera fertilises other art forms: recently, he's collaborated with Japanese kabuki actors, and a project with dancers from New York City Ballet is in the offing.”
“The catalyst was the introduction of the Health & Safety at Work⟳ Act in 1974. While it applied to all workplaces, it gradually brought about a sea change⟳ in the attitude towards death and injury. Accidents were no longer accepted as 'inevitable'.”
“The housing crisis is now a “catalyst” for anti-immigrant sentiment, an Irish parliamentary committee warned in November.”
“The current view⟳ by both Labour and Conservative politicians is that the state of the UK railway is unsustainable, and the pandemic acted as a catalyst in exposing its weaknesses.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

Learn this word in context

See Catalyst used in real conversations inside our free language course.

Start Free Course

Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free