valve gear

noun

Definition of valve gear

: any of numerous gears by which motion is given to the valves of an engine and especially a steam engine specifically : such a gear for a steam engine by which the cutoff may be varied while the engine is running and the engine started, stopped, or reversed

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Cite this Entry

“Valve gear.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/valve%20gear. Accessed 19 Feb. 2020.

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