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Catalyst

UK //ˈkæt.əl.ɪst// US //ˈkæt.əl.ɪst// Pronunciation

Definition

A substance that increases the rate of a chemical reaction without being consumed.

Listen to definition

In simple words: Something that helps a change happen faster.

Examples

• The enzyme acts as a **catalyst** for the biological reaction.
• Innovation can serve as a **catalyst** for economic growth.
• His speech became a **catalyst** for social change.
• In the reaction, the copper sulfate acts as a **catalyst**.
• The new law was a **catalyst** for increased environmental awareness.

Usage notes

Used in scientific contexts to describe substances speeding up reactions, and metaphorically in social settings. Avoid in overly casual scenarios.

Grammar pattern

catalyst + noun

Memory hint

Think of a 'cat' that makes reactions happen quickly, like a fast-moving catalyst.

Collocations

• serve as a catalyst
• act as a catalyst
• catalyst for change
• catalyst in a reaction
• catalyst for innovation

Synonyms

• accelerator
• stimulus
• impetus
• agent
• influencer

Common mistakes

• Confused with 'catalyze' which is the action of causing a reaction.
• Using it in negative contexts where change is not involved.
• Assuming it applies only in chemistry.