• synonyms


[too-sahy-kuh l]
  1. noting or pertaining to an internal-combustion engine in which two strokes are required to complete a cycle (two-stroke cycle), one to admit and compress air or an air-fuel mixture and one to ignite fuel, do work, and scavenge the cylinder.
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Compare four-cycle.

Origin of two-cycle

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for two-cycle

Historical Examples

  • When a single-cylinder engine is used, it should be of the two-cycle type.

    Electricity for the farm

    Frederick Irving Anderson

  • In 1880 he began to commercialize a two-cycle stationary engine.

    Automobile Biographies

    Lyman Horace Weeks

  • In a two-cycle engine there is one working stroke in two traverses.

  • Thus it is plain that the motor is of the four-cycle type and it should not be confounded with two-cycle motors.

  • There are many different makes of two-cycle motors, of course, and all have their various merits.

British Dictionary definitions for two-cycle


  1. US and Canadian relating to or designating an internal-combustion engine whose piston makes two strokes for every explosionAlso called (in Britain and certain other countries): two-stroke See four-stroke
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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