noun · 7 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Something that encourages progress or change.
Definition source: English Wiktionary via Wiktextract
Usage: figuratively
Examples
(obsolete)
Economic development and integration are working as a catalyst for peace.
Meaning relationships
Synonyms: stimulus, straw that stirs the drink, solicitor
Antonyms: inhibitor, dampener
3
noun
Meaning 3
An inciting incident that sets the successive conflict into motion.
Definition source: English Wiktionary via Wiktextract
Topics: literature, media, publishing
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
A catalytic converter.
Definition source: English Wiktionary via Wiktextract
Topics: automotive, transport, vehicles
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
An object that facilitates the casting of a spell (such as a magic wand).
Definition source: English Wiktionary via Wiktextract
Topics: fantasy
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
something that causes an important event to happen
Definition source: Princeton WordNet 3.0
Examples
the invasion acted as a catalyst to unite the country
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: causal agent, cause, causal agency
7
noun
Meaning 7
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: accelerator
Antonyms: anticatalyst
Broader terms: activator
Narrower terms: biocatalyst, enzyme, platinum black
History
Etymology
Etymology tree English catalysis Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Hellenic *-tās Ancient Greek -τής (-tḗs) Ancient Greek -ῐστής (-ĭstḗs)bor. Latin -istader. Old French -istebor. Middle English -ist English -ist English catalyst From catalysis + -ist.
Across languages
Translations
90 source translations are retained for this English entry.
Arabic:
حَفَّاز
(ḥaffāz)
— substance which increases the rate of a chemical reaction without being consumed in the process
Armenian:
կատալիզատոր
(katalizator)
— substance which increases the rate of a chemical reaction without being consumed in the process
Azerbaijani:
katalizator
— substance which increases the rate of a chemical reaction without being consumed in the process
Belarusian:
каталіза́тар
(katalizátar)
— substance which increases the rate of a chemical reaction without being consumed in the process
Bulgarian:
катализа́тор
(katalizátor)
— substance which increases the rate of a chemical reaction without being consumed in the process
Catalan:
catalitzador
— substance which increases the rate of a chemical reaction without being consumed in the process
Chinese Mandarin:
觸媒 /触媒
(chùméi)
— substance which increases the rate of a chemical reaction without being consumed in the process
Chinese Mandarin:
催化劑 /催化剂
(cuīhuàjì)
— substance which increases the rate of a chemical reaction without being consumed in the process
Czech:
katalyzátor
— substance which increases the rate of a chemical reaction without being consumed in the process
Danish:
katalysator
— substance which increases the rate of a chemical reaction without being consumed in the process
Dutch:
katalysator
— substance which increases the rate of a chemical reaction without being consumed in the process
Esperanto:
katalizilo
— substance which increases the rate of a chemical reaction without being consumed in the process
Estonian:
katalüsaator
— substance which increases the rate of a chemical reaction without being consumed in the process
Faroese:
kveiki
— substance which increases the rate of a chemical reaction without being consumed in the process
Finnish:
katalyytti
— substance which increases the rate of a chemical reaction without being consumed in the process
French:
catalyseur
— substance which increases the rate of a chemical reaction without being consumed in the process
Georgian:
კატალიზატორი
(ḳaṭalizaṭori)
— substance which increases the rate of a chemical reaction without being consumed in the process
German:
Katalysator
— substance which increases the rate of a chemical reaction without being consumed in the process
Greek:
καταλύτης
(katalýtis)
— substance which increases the rate of a chemical reaction without being consumed in the process
Gujarati:
ઉદ્દીપક
(uddīpak)
— substance which increases the rate of a chemical reaction without being consumed in the process
Hebrew:
זָרָז
(zaráz)
— substance which increases the rate of a chemical reaction without being consumed in the process
Hebrew:
קָטָלִיזָטוֹר
(katalizatór)
— substance which increases the rate of a chemical reaction without being consumed in the process
Hindi:
उत्प्रेरक
(utprerak)
— substance which increases the rate of a chemical reaction without being consumed in the process
Hungarian:
katalizátor
— substance which increases the rate of a chemical reaction without being consumed in the process
Icelandic:
efnahvati
— substance which increases the rate of a chemical reaction without being consumed in the process
Icelandic:
hvati
— substance which increases the rate of a chemical reaction without being consumed in the process
Indonesian:
katalis
— substance which increases the rate of a chemical reaction without being consumed in the process
Indonesian:
katalisator
— substance which increases the rate of a chemical reaction without being consumed in the process
Italian:
catalizzatore
— substance which increases the rate of a chemical reaction without being consumed in the process
Japanese:
触媒
(shokubai)
— substance which increases the rate of a chemical reaction without being consumed in the process
Kazakh:
өршіткі
(örşıtkı)
— substance which increases the rate of a chemical reaction without being consumed in the process
Korean:
촉매
(chongmae)
— substance which increases the rate of a chemical reaction without being consumed in the process
Kyrgyz:
катализатор
(katalizator)
— substance which increases the rate of a chemical reaction without being consumed in the process
Latvian:
katalizators
— substance which increases the rate of a chemical reaction without being consumed in the process
Malay:
mangkin
— substance which increases the rate of a chemical reaction without being consumed in the process
Malay:
katalis
— substance which increases the rate of a chemical reaction without being consumed in the process
Malay:
katalisator
— substance which increases the rate of a chemical reaction without being consumed in the process
Māori:
whākōkī
— substance which increases the rate of a chemical reaction without being consumed in the process
Norwegian Bokmål:
katalysator
— substance which increases the rate of a chemical reaction without being consumed in the process
Norwegian Nynorsk:
katalysator
— substance which increases the rate of a chemical reaction without being consumed in the process
Persian:
کاتالیزگر
(kâtâlizgar)
— substance which increases the rate of a chemical reaction without being consumed in the process
Polish:
katalizator
— substance which increases the rate of a chemical reaction without being consumed in the process
Portuguese:
catalisador
— substance which increases the rate of a chemical reaction without being consumed in the process
Romanian:
catalizator
— substance which increases the rate of a chemical reaction without being consumed in the process
Russian:
катализа́тор
(katalizátor)
— substance which increases the rate of a chemical reaction without being consumed in the process
Serbo-Croatian:
каталѝза̄тор
— substance which increases the rate of a chemical reaction without being consumed in the process
Serbo-Croatian:
katalìzātor
— substance which increases the rate of a chemical reaction without being consumed in the process
Slovene:
katalizator
— substance which increases the rate of a chemical reaction without being consumed in the process
Spanish:
catalizador
— substance which increases the rate of a chemical reaction without being consumed in the process
Tagalog:
pangganapbilos
— substance which increases the rate of a chemical reaction without being consumed in the process
Tajik:
катализатор
(katalizator)
— substance which increases the rate of a chemical reaction without being consumed in the process
Tatar:
катализатор
(qatalizator)
— substance which increases the rate of a chemical reaction without being consumed in the process
Telugu:
ఉత్ప్రేరకం
(utprērakaṁ)
— substance which increases the rate of a chemical reaction without being consumed in the process
Thai:
ตัวเร่ง
(dtuua-rêng)
— substance which increases the rate of a chemical reaction without being consumed in the process
Turkish:
katalizör
— substance which increases the rate of a chemical reaction without being consumed in the process
Turkish:
tezgen
— substance which increases the rate of a chemical reaction without being consumed in the process
Turkish:
ivdirgen
— substance which increases the rate of a chemical reaction without being consumed in the process
Ukrainian:
каталіза́тор
(katalizátor)
— substance which increases the rate of a chemical reaction without being consumed in the process
Vietnamese:
chất xúc tác
— substance which increases the rate of a chemical reaction without being consumed in the process
Belarusian:
каталіза́тар
(katalizátar)
— something that encourages progress or change
Bulgarian:
катализа́тор
(katalizátor)
— something that encourages progress or change
Catalan:
catalitzador
— something that encourages progress or change
Czech:
katalyzátor
— something that encourages progress or change
Finnish:
katalysaattori
— something that encourages progress or change
Finnish:
katalyytti
— something that encourages progress or change
French:
catalyseur
— something that encourages progress or change
French:
ferment
— something that encourages progress or change
French:
démiurge
— something that encourages progress or change
French:
électron libre
— something that encourages progress or change
French:
levain
— something that encourages progress or change
French:
agitateur
— something that encourages progress or change
French:
enzyme
— something that encourages progress or change
Greek:
καταλύτης
(katalýtis)
— something that encourages progress or change
Hungarian:
katalizátor
— something that encourages progress or change
Indonesian:
katalisator
— something that encourages progress or change
Italian:
catalizzatore
— something that encourages progress or change
Norwegian Bokmål:
katalysator
— something that encourages progress or change
Norwegian Nynorsk:
katalysator
— something that encourages progress or change
Polish:
katalizator
— something that encourages progress or change
Portuguese:
catalisador
— something that encourages progress or change
Romanian:
catalizator
— something that encourages progress or change
Russian:
катализа́тор
(katalizátor)
— something that encourages progress or change
Spanish:
catalizador
— something that encourages progress or change
Spanish:
fermento
— something that encourages progress or change
Spanish:
levadura
— something that encourages progress or change
Spanish:
agitador
— something that encourages progress or change
Spanish:
demiurgo
— something that encourages progress or change
Spanish:
enzima
— something that encourages progress or change
Thai:
ตัวเร่ง
(dtuua-rêng)
— something that encourages progress or change
Ukrainian:
каталіза́тор
(katalizátor)
— something that encourages progress or change