catalyst
definitions
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noun
a substance that increases the rate of a chemical reaction without being consumed; a person or thing that causes a changeen: a substance that increases the rate of a chemical reaction without being consumed; a person or thing that causes a change
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noun
a person or event that precipitates a significant changeen: a person or event that precipitates a significant change
examples
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The enzyme acted as a catalyst.
The enzyme acted as a catalyst.
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The scandal was a catalyst for reform.
The scandal was a catalyst for reform.