The crossword solution for the term 'RELATED TO EARTHQUAKES' is SEISMIC, which is a seven-letter word. Seismic is an adjective that refers to anything related to earthquakes, such as seismic waves, seismic activity, or seismic monitoring. Seismic waves are vibrations that travel through the Earth's crust and can be used to measure the intensity of an earthquake. Seismic activity is the frequency of earthquakes in a certain area, while seismic monitoring is the process of measuring and recording seismic activity.