cycle Definition

cycle
noun

1. A constantly repeating series of events or processes.
2. A recurring period of years; an age.

Thesaurus: succession, period, age, eon, epic, era.
3. physics.
One of a regularly repeated set of similar changes, eg in the movement of a wave, with the duration of one cycle being equal to the period (noun 10) of the motion, and the rate at which a cycle is repeated per unit time being equal to its frequency (noun 3).
4. A series of poems, songs, plays, etc centred on a particular person or happening.
5a. Short for bicycle;
5b. Short for motorcycle;
5c. Short for tricycle.

verb cycled, cycling

tr & intr
1. To ride a bicycle.
intr
2. To happen in cycles.

Etymology: 14c: from Greek kyklos circle.