Also means
regularity
Usage Note
Periodicidad refers to the quality of recurring at regular intervals. It appears in scientific writing (la periodicidad de las mareas) and in journalism to describe how often something is published. English 'periodicity' is a direct cognate but far rarer; Spanish uses this word more freely in everyday academic or technical prose.
Examples
"La periodicidad de los terremotos es impredecible."
Natural Translation
The periodicity of earthquakes is unpredictable.

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