geophone

[ jee-uh-fohn ]
/ ˈdʒi əˌfoʊn /

noun

a device that is placed on or in the ground and used to detect seismic waves.

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Origin of geophone

First recorded in 1915–20; geo- + -phone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for geophone

Scientific definitions for geophone

geophone
[ jēə-fōn′ ]

An electronic receiver designed to pick up seismic vibrations on or below the Earth's surface and to convert them into electric impulses that are proportional to the displacement, velocity, and acceleration of ground movement. Geophones detect motion in only one direction and are usually used in groups of at least three, oriented at different angles, so that a three-dimensional record of ground movement can be obtained.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.