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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New Jersey man Navin Khanna has pleaded guilty to running a criminal enterprise that stole thousands of catalytic converters from vehicles and sold them on, making as much as $600 million in the process. Thomas Brewster, Forbes.com, 22 July 2025 Luis Benitez installs one of four new catalytic converters onto a Chevrolet Silverado at Johnny Franklin's Muffler on July 11, 2022 in San Rafael, California. Dan Mangan, CNBC, 22 July 2025 As a result, the state has frequently exercised that power, driving changes in the nation’s standards and technology, including the adoption of catalytic converters. Francine Kiefer, Christian Science Monitor, 2 June 2025 The ring involved theft of catalytic converters from motor vehicles across Connecticut, federal authorities. Staff Report, Hartford Courant, 22 Apr. 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 Aug. 2025.

Kids Definition

catalytic converter

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

More from Merriam-Webster on catalytic converter

Last Updated: - Updated example sentences
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