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   catalyst

   /ˈkatəlɪst/

   noun

   • 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change: "chlorine acts as a catalyst promoting the breakdown of ozone"
   • ▪ a person or thing that precipitates an event: "the prime minister's speech acted as a catalyst for debate"

   Word Origin early 20th century: from catalysis, on the pattern of analyst.

   Scrabble Points: 13

   • C

     3

   • A

     1

   • T

     1

   • A

     1

   • L

     1

   • Y

     4

   • S

     1

   • T

     1

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