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
Lots of fly-by-night import shops sprang up, happy to rubber-stamp any Mercedes with a catalytic converter haphazardly welded under the floorboards.
—
Raphael Orlove, Robb Report, 23 Sep. 2025
The research vessel will also be equipped with a catalytic converter for exhaust gas aftertreatment.
—Georgina Jedikovska, Interesting Engineering, 17 Sep. 2025
Palladium is a chemical element used in catalytic converters, which converts 90 percent of harmful emissions from car exhaust.
—Ashleigh Fields, The Hill, 21 Aug. 2025
Michigan City Area Schools had to scramble to keep kids learning on Tuesday and Wednesday after thieves swiped more than 20 catalytic converters from the district’s bus yard.
—Meredith Colias-Pete, Chicago Tribune, 20 Aug. 2025
See All Example Sentences for catalytic converter
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Raphael Orlove, Robb Report, 23 Sep. 2025
The research vessel will also be equipped with a catalytic converter for exhaust gas aftertreatment.
—Georgina Jedikovska, Interesting Engineering, 17 Sep. 2025
Palladium is a chemical element used in catalytic converters, which converts 90 percent of harmful emissions from car exhaust.
—Ashleigh Fields, The Hill, 21 Aug. 2025
Michigan City Area Schools had to scramble to keep kids learning on Tuesday and Wednesday after thieves swiped more than 20 catalytic converters from the district’s bus yard.
—Meredith Colias-Pete, Chicago Tribune, 20 Aug. 2025
See All Example Sentences for catalytic converter
Cite this Entry
“Catalytic converter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/catalytic%20converter. Accessed 4 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share