gravimeter

[gruh-vim-i-ter]
noun
1.
an instrument for measuring the specific gravity of a solid or liquid.
2.
Also called gravity meter. an instrument for measuring variations in the gravitational field of the earth by detecting differences in weight of an object of constant mass at different points on the earth's surface.

Origin:
1790–1800; < French gravimètre, equivalent to gravi- (combining form of Latin gravis heavy) + -mètre -meter

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Collins
World English Dictionary
gravimeter (ɡrəˈvɪmɪtə)
 
n
1.  an instrument for measuring the earth's gravitational field at points on its surface
2.  an instrument for measuring relative density
 
[C18: from French gravimètre, from Latin gravis heavy]
 
gra'vimetry
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

gravimeter gra·vim·e·ter (grā-vĭm'ĭ-tər, grā'və-mē'-)
n.

  1. See hydrometer.

  2. An instrument used to measure variations in a gravitational field.


gra·vim'e·try (grā-vĭm'ĭ-trē, grə-) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
gravimeter   (grā-vĭm'ĭ-tər)  Pronunciation Key 
  1. An instrument used to measure variations in a gravitational field, typically by measuring the rate of acceleration of a falling body. Gravimeters are used to survey geological features with different densities beneath the Earth's surface, such as ore-laden rock or oil fields, that affect the local strength of gravity above them.

  2. An instrument, such as a hydrometer, used to measure the specific gravity of a liquid or solid.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

gravimeter

sensitive device for measuring variations in the Earth's gravitational field, useful in prospecting for oil and minerals. In one form, it consists of a weight suspended from a spring; variations in gravity cause variations in the extension of the spring. A number of different mechanical and optical schemes have been developed to measure this deflection, which in general is very small. Gravimeters have been developed that can detect variations in the Earth's gravitational field as small as one part in 10,000,000.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The relative gravimeter works by comparing two or more measurements of gravity.
Some of these gravity stations serve as reference stations for relative gravimeter surveys.
The gravity field can be measured with an instrument called a gravimeter.
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