catalytic converter

noun

: an automobile exhaust-system component containing a catalyst that causes conversion of harmful gases (such as carbon monoxide and uncombusted hydrocarbons) into mostly harmless products (such as water and carbon dioxide)

Examples of catalytic converter in a Sentence

Recent Examples on the Web
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Cerium is used in catalytic converters, which reduce combustion engine emissions. Jason Neely and Eric Onstad, USA TODAY, 27 Feb. 2025 According to prosecutors, catalytic converter thefts dropped by more than 60% in the Fresno area after Thomas' April 2023 arrest. Krystal Nurse, USA Today, 29 Mar. 2025 Over the years, thieves in Southern California have made catalytic converters a popular target because they can be sold for their high concentration of precious metals. Jaweed Kaleem, Los Angeles Times, 2 Mar. 2025 Palladium is also essential in catalytic converters, as the metal serves as a catalyst in the chemical process of hydrogenation in unsaturated hydrocarbons. Victor Rosario, Sacramento Bee, 26 Feb. 2025 See All Example Sentences for catalytic converter

Word History

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of catalytic converter was in 1955

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Cite this Entry

“Catalytic converter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/catalytic%20converter. Accessed 21 Apr. 2025.

Kids Definition

catalytic converter

noun
: a device containing a catalyst for changing automobile exhaust into mostly harmless products

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