cycle

noun

1.
an interval during which a recurring sequence of events occurs
Derived from:
cycle cyclic
2.
a series of poems or songs on the same theme
3.
a periodically repeated sequence of events
4.
the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
5.
a single complete execution of a periodically repeated phenomenon
6.
a wheeled vehicle that has two wheels and is moved by foot pedals
Derived from:
cyclist