What do you call propagation of a wave from one point to another by more than one path?

The term that describes the propagation of a wave from one point to another by more than one path is known as multipathing. This phenomenon occurs in various types of waves, including radio waves, where signals can reflect off surfaces, such as buildings or the ground, causing the same signal to arrive at a destination via different routes.

Multipathing can lead to constructive or destructive interference, influencing the quality of the received signal. In areas where there are many obstacles or reflective surfaces, signals can take numerous paths to reach the same receiver, making it a key concept in communications and signal processing.

Ducting refers to the trapping of radio waves within a layer of the atmosphere, which does not encompass multiple paths, while subrefraction and superrefraction describe specific conditions affecting wave propagation but do not directly relate to the concept of multiple pathways.