Synonyms: oscillation, cycle
Definition: a single complete execution of a periodically repeated phenomenon
Usage: a year constitutes a cycle of the seasons
Similar words: periodic event, recurrent event
Definition: an event that recurs at intervals
Synonyms: vibration, oscillation
Definition: (physics) a regular periodic variation in value about a mean
Similar words: undulation, wave
Definition: (physics) a movement up and down or back and forth
Synonyms: oscillation
Definition: the process of oscillating between states
Similar words: natural action, natural process, action, activity
Definition: a process existing in or produced by nature (rather than by the intent of human beings)
Usage: the action of natural forces; volcanic activity