Meaning & use
seismometer
An instrument that detects and measures the vibrations of the ground caused by earthquakes.
See it in a sentence
The seismometer recorded a small tremor near the fault line overnight.
Scientists installed a seismometer to monitor activity beneath the volcano.
A note on using this word
A seismometer measures ground motion, while a seismograph produces the visual record of it; the terms are often used loosely as synonyms.
Words with a similar meaning
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