Pronunciation

How to pronounce “catalyst

“catalyst” is pronounced /ˈkætələst/ (KA-tuh-luhst) in American English and /katɐlɪst/ in British English, and /ˈkætəlɪst/ is also accepted — 3 syllables, stressed on “cat”.
The sound

Say “catalyst” in 3 beats

Say it like this

catalyst

/ˈkætələst/

The voice you hear here is American; the British form is /katɐlɪst/ (see the table below), and a British voice is available in the app's settings.

3 beats
  1. catstress
  2. al
  3. ystləst
IPA (American)
/ˈkætələst/
IPA (British)
/katɐlɪst/
Also accepted
/ˈkætəlɪst/
Respelling
KA-tuh-luhst
Syllables
3 — CAT-al-yst
Stress
Stress the first syllable: CAT-al-yst. “cat” is longer, louder and a step higher; the other syllables fall away from it.
Part of speech
noun
Difficulty
Pro — the sounds are ordinary, the rhythm is where it slips
Accents

American and British are not the same here

American

/ˈkætələst/

British

/katɐlɪst/

No audio here: sayit’s voice is American, so a British button would play the American word. Read the transcription instead.

Meaning

What “catalyst” means

  1. noun

    (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

  2. noun

    something that causes an important event to happen

    the invasion acted as a catalyst to unite the country

Say it in a sentence

A single meeting became the catalyst for the whole project.
Sound by sound

The sounds inside this word

6 sounds, in the order you say them

Each sound has its own page: where the tongue goes, what it is usually confused with, and words to drill it on.

Questions

catalyst”, answered

How do you pronounce “catalyst”?

“catalyst” is pronounced /ˈkætələst/ (KA-tuh-luhst) in American English and /katɐlɪst/ in British English, and /ˈkætəlɪst/ is also accepted — 3 syllables, stressed on “cat”. Build it as CAT-al-yst, then run the first syllable a little longer than the rest and let the others reduce.

How many syllables does “catalyst” have?

3: cat · al · yst. The beat lands on the first, “cat”.

Is “catalyst” said differently in British English?

Yes. American English says /ˈkætələst/ (KA-tuh-luhst); British English says /katɐlɪst/. Both are correct — choose the accent you are learning and stay inside it.

What does “catalyst” mean?

As a noun: (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected For example: “A single meeting became the catalyst for the whole project.” It carries 1 other sense as well — all of them said the same way.

Where is the stress in “catalyst”?

Stress the first syllable: CAT-al-yst. “cat” is longer, louder and a step higher; the other syllables fall away from it.

Practise this word

Now say “catalyst” and see every sound

Record it once and sayit lines your audio up against the target sound by sound — what landed, what slipped, and what it sounded like instead.