four-stroke Hear it!

four-stroke definition

four·-stroke (fôr′strōk′)

adjective

designating or having to do with an internal-combustion engine in which a complete fuel cycle in a cylinder requires four separate piston strokes

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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