Word.ws English Dictionary

catalyst

UK/ˈkæt.ɪ.lɪst/US/ˈkæt.ə.lɪst/

More pronunciations (1)Fewer pronunciations

catalyst noun: a substance that increases the rate of a chemical reaction without being consumed in the process.

Noun

catalyst (plural 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.1988, Lubert Stryer, Biochemistry, 3rd edition, page 177
  2. (encourages) Something that encourages progress or change.
    • (obsolete)
    • Economic development and integration are working as a catalyst for peace.
    Antonyms:
    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.2023 May 31, Tammy Samuel, Fergus McLaverty, “The political picture: what lies ahead for Britain's railways?”, in RAIL, number 984, page 31
  4. A catalytic converter.
  5. An object that facilitates the casting of a spell (such as a magic wand).

catalyst meaning in Hindi, Tamil, Bengali and Telugu

catalyst in Hindi

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

catalyst in Tamil

வினைவேக மாற்றி, வினைவேகமாற்றி, வினையூக்கி, வேதி வினை ஊக்கி, கிரியவினையூக்கி, கிரியா ஊக்கி

catalyst in Bengali

অনুঘটক

catalyst in Telugu

substance which increases the rate of a chemical reaction without being consumed in the process
ఉత్ప్రేరకం utprērakaṁ
More languagesFewer languages
catalyst in Kannada
ಚುರುಕಿ, ಕ್ರಿಯಾವರ್ಧಕ, ವೇಗವರ್ಧಕ, ಪರಿವರ್ತಕ
catalyst in Gujarati
ઉદ્દીપક uddīpak
catalyst in Tagalog
pangganapbilos
catalyst in Arabic
حَفَّاز ḥaffāz
catalyst in Malay
mangkin, katalis, katalisator
catalyst in Indonesian
katalis, katalisator
catalyst in Persian
کاتالیزگر kâtâlizgar
catalyst in Thai
ตัวเร่ง dtuua-rêng
catalyst in Vietnamese
chất xúc tác

Examples of catalyst in a sentence

  • 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.1978, Ernest George Schwiebert, Trout, volume 2:
  • Israel's fear for the reactor—rather than Egypt's of it—was the greater catalyst for war.2004, Michael B. Oren, Six Days of War: June 1967 and the making of the modern Middle East, page 76:
  • Rosa Parks was a true catalyst for change and she was only one person.2006, The Freedom Writers, with Erin Gruwell, The Freedom Writers Diary: How a Teacher and 150 Teens Used Writing to Change Themselves and...
  • The catalyst was the introduction of the Health & Safety at Work Act in 1974.2022 January 26, John Crosse, “When the tide turned to a safer railway...”, in RAIL, number 949, page 53:

All 38 example sentences with catalyst

Synonyms of catalyst

Antonyms

All synonyms and antonyms of catalyst

Forms of catalyst

pluralcatalysts

Plural of catalyst: catalysts

Origin of catalyst

From catalysis + -ist.

Words formed from catalyst

Phrases with catalyst

Questions about catalyst

What does catalyst mean?
Catalyst means a substance that increases the rate of a chemical reaction without being consumed in the process.
What is catalyst in Hindi?
Catalyst in Hindi is उत्प्रेरक (utprerak). See Catalyst meaning in Hindi.
How do you use catalyst in a sentence?
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.
What part of speech is catalyst?
Catalyst is a noun.
How do you pronounce catalyst?
Catalyst is pronounced /ˈkæt.ɪ.lɪst/ (UK).
What is the plural of catalyst?
The plural of catalyst is catalysts.

Words near catalyst in the dictionary

  1. catalysers
  2. catalyses
  3. catalysing
  4. catalysis
  5. catalysize
  6. catalyst
  7. catalystic
  8. catalysts
  9. catalytic
  10. catalytic activities
  11. catalytic activity

Source and license

Adapted from Wiktionary: catalyst (page history and authors); catalyst (Tamil Wiktionary) (page history and authors); catalyst (Bengali Wiktionary) (page history and authors); catalyst (Kannada Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-us-ncalif-catalyst.ogg, en-au-catalyst.ogg.

Cite this entry: “catalyst.” Word.ws, https://word.ws/catalyst. Based on Wiktionary, CC BY-SA 4.0.