Seismilise

Seismiline is an Estonian adjective meaning seismic, relating to earthquakes or the propagation of elastic waves through the Earth. Seismilise is a declined form of seismiline used to agree with nouns in different grammatical cases.

In scientific usage, seismilise describes phenomena such as seismic waves, seismic activity, and ground motion. The field that studies these phenomena is seismoloogia (seismology), which investigates earthquakes, the Earth's interior, and wave propagation. Data are gathered with instruments such as seismograafid (seismographs) and accelerometers and then analyzed to assess hazard, magnitude, and structural response.

The concept underpins earthquake engineering, hazard assessment, and building codes, supporting safety standards and preparedness planning. In broader usage, the term can also denote major, Earth-shaking changes.

Related concepts include seismic waves, seismology, and seismic hazard.