geophone

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English

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Etymology

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From geo- +‎ -phone.

Noun

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English Wikipedia has an article on:
Wikipedia

geophone (plural geophones)

  1. (geology) A form of microphone that detects and records seismic vibrations.
  2. (music) A percussion instrument consisting of a drum filled with pellets, played by swirling it around to produce a sound like shifting earth.