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(biology) a series of transformations and events that happen in an animal or plant's lifetime
a vehicle with two wheels designed for propulsion by foot pedals like a bicycle or tricycle
an interval during which a recurring sequence of events occurs
a periodically repeated sequence of events
a series of poems or songs on the same theme
a single complete execution of a periodically repeated phenomenon
the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
to ride or travel on a bicycle or motorbike
to go through a complete series of events or stages in a cyclical or repetitive manner
to cause or facilitate the movement or progression of something through a recurring sequence
to move or progress in a pattern or sequence of events that repeats itself regularly
