seismic wave

This term is a technical compound noun used primarily in geophysics and seismology. It describes the energy propagation resulting from a sudden release of stress in the Earth's lithosphere. While it is a scientific term, it is frequently used in news reporting to describe the physical mechanics of earthquakes.

In a figurative sense, the word "seismic" is often detached from "wave" to describe a shift or change that is sudden, massive, and transformative, such as a "seismic shift in politics." However, when paired as "seismic wave," the meaning remains strictly tied to geological phenomena.