Which term refers to a point in a stationary wave that remains undisturbed?

The term that refers to a point in a stationary wave that remains undisturbed is known as a node. In the context of stationary or standing waves, nodes are the positions along the wave where there is minimal or no displacement of the medium. This means that at a node, the waves interfere destructively, cancelling each other out, resulting in a point that experiences no movement.

In contrast to nodes, there are also antinodes in stationary waves, which are points of maximum displacement. Nodes and antinodes are integral in understanding the characteristics of standing waves, as they help illustrate the wave's behavior and energy distribution. The concepts of crest and trough refer to the maximum and minimum points of displacement in a traveling wave, rather than stationary points. Thus, the definition and function of a node is essential in the study of wave phenomena.