catalyst

catalizador

Persona o cosa que ayuda a iniciar un cambio importante o a acelerarlo.

En inglés sencillo: A person or thing that helps an important change begin or happen faster.

• The protest became a catalyst for change.
• Her arrival acted as a catalyst for reform.
• Could this discovery be a catalyst for further research?

Cómo se usa: catalyst for something (The crisis was a catalyst for reform.)

Sinónimos: spark, stimulus

Expresiones frecuentes: catalyst for change, act as catalyst, catalyst for something

catalizador

Sustancia que acelera un cambio químico sin consumirse durante el proceso.

En inglés sencillo: A substance that makes a chemical change happen faster without being used up.

• The reaction needs a catalyst.
• Platinum acts as a catalyst in this process.
• Scientists tested several catalysts to speed up the reaction.

Expresiones frecuentes: chemical catalyst, use a catalyst, catalyst in something

catalizador

Dispositivo de un vehículo que reduce el daño causado por los gases de escape.

En inglés sencillo: A device in a vehicle that makes harmful exhaust gases less harmful.

• The mechanic replaced the catalyst.
• A damaged catalyst can increase exhaust pollution.
• This car needs a new catalyst to pass inspection.

Sinónimos: catalytic converter

Expresiones frecuentes: exhaust catalyst, replace a catalyst, damaged catalyst