catalyst, spark, trigger

Dan H.
5 words 0 learners

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Full list of words from this list:

words only definitions & notes
  1. catalyst
    substance that initiates or accelerates a chemical reaction
  2. spark
    a small fragment of a burning substance
  3. trigger
    lever that activates the firing mechanism of a gun
  4. boost
    increase
  5. stimulate
    cause to act in a specified manner
Created on 八月 24, 2007

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