catalyst meaning

[ 'kætəlist ] Pronunciation:   "catalyst" in a sentence
Noun: catalyst  katlist
  1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
    - accelerator 
  2. Something that causes an important event to happen
    "the invasion acted as a catalyst to unite the country"

Derived forms: catalysts

See also: catalyze [N. Amer]

Type of: activator, causal agency, causal agent, cause

Antonym: anticatalyst

Encyclopedia: Catalyst


A substance which accelerates a chemical reaction but appears to remain unchanged itself.


A hardener that accelerates cure of adhesives either with or without heat. Used primarily with synthetic resins.

noun [C]

a person or thing that causes a change:

The new head of sales proved to be a catalyst for change.

Something that initiates or causes an important event to happen. Originally a term used in chemistry for the volatile (active) chemical in a formula.

n : a substance (as an enzyme) that enables a chemical reaction to proceed under different conditions (as at a lower temperature) than otherwise possible


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  1. many medicines are products of catalysts.
  2. the catalyst is subjected to a uniform ram pressure.
  3. those catalysts are used in small tubular reactors.
  4. there is actually a failure of the integral particle of the catalyst.
  5. to pass the water test the catalyst should not disintegrate or crumble.

Related Words

  1. catalpa speciosa meaning
  2. catalufa meaning
  3. catalyse meaning
  4. catalyser meaning
  5. catalysis meaning
  6. catalyst stripping meaning
  7. catalytic meaning
  8. catalytic activity meaning
  9. catalytic agent meaning
  10. catalytic antibodies meaning
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