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- noun
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- a substance that accelerates the rate of a chemical reaction without itself changing; a person or thing that causes change [Princeton Review]
- substance that speeds up a chemical reaction without itself changing [Barron]
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- something that causes activity between two or more persons or forces without itself being affected
- a person or thing that precipitates an event or change: His imprisonment by the government served as the catalyst that helped transform social unrest into revolution
- a person whose talk, enthusiasm, or energy causes others to be more friendly, enthusiastic, or energetic
More word meanings for catalyst
from leading online dictionaries:
- Wiktionary:
- catalyst @ wiktionary
- WordNet:
- catalyst @ wordnet.princeton.edu
- Merriam-Webster Online:
- catalyst @ M-W.com
- MSN Encarta:
- catalyst @ Encarta
- American Heritage Dictionary of the English Language:
- catalyst @ AHD provided by Yahoo! Education
- Answers.com:
- catalyst @ Answers.com
- Search for more definitions on Google:
- Google define:catalyst
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- Yahoo! define:catalyst
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- Ask.com dictionary: catalyst