catalyst
Pronunciación: [ˈkætəlɪst]
Palabra
Contexto: «science»
(noun) a substance that helps a chemical reaction happen faster without being used up. It’s like when you add something to a recipe to make it cook better, but it doesn’t change itself.
Ejemplo
The enzyme acted as a catalyst, speeding up the reaction in the lab.
Ejemplo
Without the catalyst, the reaction took much longer and wasn’t as effective.
Ejemplo
What catalyst did you use to make the reaction go faster?
Contexto: «change»
(noun) something that causes change or helps something important happen. It’s like a friend encouraging you to try something new or exciting.
Ejemplo
The community event was a catalyst for many positive changes in the neighborhood.
Ejemplo
Without a catalyst, the project failed to inspire any improvements.
Ejemplo
What events can be a catalyst for change in your life?
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