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four-cycle

[fawr-sahy-kuh l, fohr-] /ˈfɔrˌsaɪ kəl, ˈfoʊr-/
adjective
1.
noting or pertaining to an internal-combustion engine in which a complete cycle in each cylinder requires four strokes, one to draw in air or an air-fuel mixture, one to compress it, one to ignite it and do work, and one to scavenge the cylinder.
Also, four-stroke.
Compare two-cycle.
Origin
1905-1910
1905-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for fourcycle

four-cycle

adjective
1.
(US & Canadian) relating to or designating an internal-combustion engine in which the piston makes four strokes for every explosion Equivalent term (in Britain and certain other countries) four-stroke Compare two-stroke
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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