gravimeter
gra·vi·me·ter
noun
2.
a measuring instrument for measuring variations in the gravitational field of the earth
Origin
From gravi- + -meter.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.