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catalyst noun

  /ˈkæt.ə.lɪst/ , /ˈkæt.ɪ.lɪst/ , /ˈkɛt.ə.ləst/ , [ˈkæɾ.ə.lɪst] , [ˈkɛɾ.ə.ləst]
  • (chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.
 katalysator
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