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Four Hundred
four-in-hand
four-leaf clover
four-letter word
four-o’clock
four-on-the-floor
four-poster
four-star
four-stroke
four-twenty
four-way stop
four-wheel drive
four-wheeler
fourchette
fourdrinier
fourfold
Fourier analysis
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four-stroke
four-stroke


adjective 
Definition:
 
Canada automotive requiring 4 strokes per cycle: describes an internal-combustion engine in which the piston makes four strokes to complete a cycle.
U.S. term  four-cycle
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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