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Definition of catalytic converter
catalytic converter
Plural:catalytic converters
• noun
1
An exhaust emission control device used in internal combustion engines that reduces toxic gases and pollutants into less harmful substances through chemical reactions involving a catalyst.
Example
"The mechanic replaced the stolen catalytic converter to ensure the car would pass its mandatory state emissions test."
• Nearby Words
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Catalytic converter. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/catalytic%20converter