timing belt

noun

plural timing belts
: a belt that connects the camshaft and the crankshaft in a vehicle engine (as in an automobile) and coordinates the opening and closing of the engine's valves
Honda recommends that the timing belt be replaced at 105,000 miles. John Paul
The timing belt is a lot smaller and cheaper than a transmission or an engine, but it is an essential car part nonetheless. Melissa Thompson
compare timing chain

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of timing belt was in 1950

Dictionary Entries Near timing belt

Cite this Entry

“Timing belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/timing%20belt. Accessed 7 Dec. 2022.

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