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Meaning of tiltmeter

tilt•me•ter

Pronunciation: (tilt'mē"tur), [key]
— n. Geol.
  1. an instrument used to measure slight changes in the inclination of the earth's surface, usually in connection with volcanology and earthquake seismology.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.