A cycle is a series of events that happen repeatedly in the same order. Or, it is a slang term for a bicycle. If you ride a cycle to work, we suggest putting your clothes through the wash cycle twice — or wear strong cologne.
We get cycle from Latin cyclus and Greek kuklos, both meaning "circle." So you can see where bi- (two) and tri- (three) + cycle got their names. Nowadays, cycle can be a verb or a noun: You can ride a cycle or you can cycle to the park. The same holds true when you’re talking about a sequence of repeating events: The seasons cycle through spring, summer, fall, and winter. The plant life cycle goes from seed to flower to seed dispersal.