<p><strong>Noun</strong></p><ul><li>any complete round or series of occurrences that repeats or is repeated</li><li>a round of years or a recurring period of time, especially one in which certain events or phenomena repeat themselves in the same order and at the same intervals</li><li>any long period of years; age</li><li>a bicycle, motorcycle, tricycle, etc.</li><li>a group of poems, dramas, prose narratives, songs, etc., about a central theme, figure, or the like: the Arthurian cycle</li><li>Physics: a sequence of changing states that, upon completion, produces a final state identical to the original one</li><li>one of a succession of periodically recurring events</li><li>a complete alteration in which a phenomenon attains a maximum and minimum value, returning to a final value equal to the original one</li><li>Mathematics: a permutation of a set of elements that leaves the original cyclic order of the elements unchanged</li><li>Computers: the smallest interval of time required to complete an operation in a computer</li><li>a series of computer operations repeated as a unit</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to ride or travel by bicycle, motorcycle, tricycle, etc.</li><li>to move or revolve in cycles; pass through cycles</li></ul>