periodicity

One factor on the path to periodicity is what Simon calls “predator foolhardiness.”
Cicada science heats up when Brood X emerges. 2021 was no exception|Susan Milius|December 14, 2021|Science News
For example, loops in time-varying data can indicate periodicity.
How Mathematicians Use Homology to Make Sense of Topology|Kelsey Houston-Edwards|May 11, 2021|Quanta Magazine
But he does not exclude the possible existence of an inherited vestige of periodicity in the sexual impulse.
The Sexual Life of the Child|Albert Moll
It is widely assumed that even in the human species there remain vestiges of such a periodicity in the sexual impulse.
The Sexual Life of the Child|Albert Moll

Periodicity rules over the mental experience of man, according to the path of the orbit of his thoughts.
The Rhythm of Life|Alice Meynell
For the periodicity of the sun is still in part a secret; but that of the moon is modestly apparent, perpetually influential.
The Rhythm of Life|Alice Meynell
For man—except those elect already named—is hardly aware of periodicity.
The Rhythm of Life|Alice Meynell

Origin of periodicity