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“geophone”
1. A seismic device used to detect vibrations in the Earth: A geophone is an instrument used for detecting sound waves underground.
A geophone is a seismic transducer that responds to motions of ice, soil, or rock at locations on or below the surface of the ground.
2. In music, a drum that is filled with pellets: Jack swung the geophone around to make sounds like earth shifting from one place to another.
This entry is located in the following units:
geo-, ge- +
(page 16)
phon-, phono-, -phone, -phonia, -phonic, -phonetic, -phonous, -phonically, -phonetically, -phony +
(page 6)