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{%type%} Definitions

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Short "hint"

n. - Something that causes an important event to happen; (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected.

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Usage examples (37)
  • Worry has been described as a spasm of the emotions, a catalyst for creating a depressed condition within a human being.
  • The invasion acted as a catalyst to unite the country
  • And part of the catalyst is get yourself in trouble.
  • This catalyst is now used widely in organic synthesis.
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