catalyst

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catalyst

  • /ˈkæt.ɪ.lɪst/ UK
  • /ˈkæt.ə.lɪst/ Australia, Canada, US
  • [ˈkæɾ.ə.lɪst] Australia, Canada, US
  • /ˈkɛt.ə.ləst/ New Zealand
  • [ˈkɛɾ.ə.ləst] New Zealand

noun catalysts

  1. A substance that increases the rate of a chemical reaction without being consumed in the process. Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations.
  2. Something that encourages progress or change. (obsolete)

    Similar: stimulus, straw that stirs the drink, solicitor · Opposite: inhibitor, dampener

  3. An inciting incident that sets the successive conflict into motion. 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.
  4. A catalytic converter.
  5. An object that facilitates the casting of a spell (such as a magic wand).

Thesaurus

Closest in meaning: accelerator, catalysis, catalytic, fertilizer, momentum, warm, switch, motor, centrepiece, lever, trigger, engine, vector, springboard, driver, converter

Translations

Every language

noun substance which increases the rate of a chemical reaction without being consumed in the process

Españolcatalizador
한국어촉매 chongmae
日本語触媒 shokubai
中文觸媒 /触媒 chùméi, 催化劑 /催化剂 cuīhuàjì
हिन्दीउत्प्रेरक utprerak
Portuguêscatalisador
Françaiscatalyseur
DeutschKatalysator
Italianocatalizzatore
Ελληνικάκαταλύτης katalýtis
Românăcatalizator
Русскийкатализа́тор katalizátor
Tiếng Việtchất xúc tác
العربيةحَفَّاز ḥaffāz
עבריתזָרָז zaráz, קָטָלִיזָטוֹר katalizatór

noun something that encourages progress or change

Españolcatalizador, fermento, levadura, agitador, demiurgo, enzima
Portuguêscatalisador
Françaiscatalyseur, ferment, démiurge, électron libre, levain, agitateur
Italianocatalizzatore
Ελληνικάκαταλύτης katalýtis
Românăcatalizator
Русскийкатализа́тор katalizátor

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MLA

"catalyst." Wiktionary, via Micwyn, micwyn.com/word/catalyst. Accessed 6 Nov. 2026.

APA

catalyst. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/catalyst

Chicago

"catalyst." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/catalyst.

BibTeX
@misc{catalyst_2026,
  title = {catalyst},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/catalyst},
  urldate = {2026-11-06}
}