variometer

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var·i·om·e·ter

 (vâr′ē-ŏm′ĭ-tər, văr′-)
n.
A variable inductor used to measure variations in terrestrial magnetism.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

variometer

(ˌvɛərɪˈɒmɪtə)
n
1. (General Physics) an instrument for measuring variations in a magnetic field, used esp for studying the magnetic field of the earth
2. (Electrical Engineering) electronics a variable inductor consisting of a movable coil mounted inside and connected in series with a fixed coil
3. (Aeronautics) a sensitive rate-of-climb indicator, used mainly in gliders
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

var•i•om•e•ter

(ˌvɛər iˈɒm ɪ tər)

n.
1. a two-coil inductor in which electrical inductance is varied by rotating one coil within the other.
2. an adaptation of this used for detecting changes in the earth's magnetic field.
[1895–1900; vari- (see various) + -o- + -meter]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.variometer - a measuring instrument for measuring variations in a magnetic fieldvariometer - a measuring instrument for measuring variations in a magnetic field
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
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