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valve-in-head engine

noun
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Definition of valve-in-head engine

: an internal-combustion engine in which both inlet and exhaust valves are located in the cylinder head

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“Valve-in-head engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/valve-in-head%20engine. Accessed 3 Aug. 2020.

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