cycling -
That undergoes a cyclic motion or process.
Wikipedia
Cycling, also called bicycling or biking, is the use of bicycles for transport, recreation, or for sport. Persons engaged in cycling are cyclists. or bicyclists. Apart from ordinary two-wheeled bicycles, cycling also includes riding unicycles, tricycles, quadracycles, and other similar human-powered vehicles (HPVs).
OmegaWiki Dictionary
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cycling The use of bicycles for transport, recreation, or sport.