What do we call the lowest point of a wave?

The lowest point of a wave is referred to as the trough. In the context of waves, the trough represents the minimum displacement of the wave from its rest position. This is in contrast to the crest, which is the highest point of the wave. Understanding the terms related to wave characteristics is crucial, as they describe different aspects of wave behavior. For instance, amplitude relates to the height of the wave from the rest position to either the crest or the trough and does not specify a point on the wave itself, while wave height refers to the total vertical distance between the crest and the trough, combining both aspects into a single measurement. Thus, identifying the trough as the lowest point highlights the fundamental understanding of wave structure.