An oscillating wave in an enclosed body of water. A seiche may have a period from a few minutes to a few hours and is usually a result of seismic or atmospheric disturbances.
A wave that oscillates in lakes, bays, or gulfs from a few minutes to a few hours as a result of seismic or atmospheric disturbances.
A natural, standing wave in the water of a lake, bay, etc., caused by changes in atmospheric pressure, seismic disturbances, winds, waves, tides, etc.: it continues after the generating force stops.
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