IPA: /ˈsaɪzməˌmɛtər/
KK: /ˈsaɪzməˌmɪtər/
A device used to detect and measure movements in the ground caused by seismic waves, such as those from earthquakes.
The scientist used a seismometer to record the tremors from the earthquake.
Seismometer → It is formed from "seismo-" (from Greek "seismos", meaning earthquake) and "-meter" (from Greek "metron", meaning measure). The word "seismometer" refers to an instrument that measures the intensity and duration of earthquakes.
Think of 'seismos' which relates to earthquakes, and 'meter' which means to measure — a seismometer is a device that measures earthquakes.