oscillatory period

The time taken for an oscillation to occur is often referred to as the oscillatory period.

During an active Madden-Julian oscillatory period over Australian longitudes in late November, a broad low-pressure area developed within the monsoon trough in the southeastern Arafura Sea, west of Cape York Peninsula.

For example, in a study of tides, the experimentalist would acquire samples of water depth as a function of time at closely enough spaced intervals to see each oscillation and over a long enough duration that multiple oscillatory periods are likely included.