n. 1.an interval during which a recurring sequence of events occurs 2.a series of poems or songs on the same theme 3.a periodically repeated sequence of events 4.the unit of frequency 5.a single complete execution of a periodically repeated phenomenon 6.a wheeled vehicle that has two wheels and is moved by foot pedals cycle v. 1.cause to go through a recurring sequence 2.pass through a cycle 3.ride a motorcycle 4.ride a bicycle 5.recur in repeating sequences