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tiltmeter

[tilt-mee-ter] /ˈtɪltˌmi tər/
noun, Geology
1.
an instrument used to measure slight changes in the inclination of the earth's surface, usually in connection with volcanology and earthquake seismology.
Origin
1930-1935
1930-35; tilt1 + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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