magnetograph

[mag-nee-tuh-graf, -grahf]
noun
a recording magnetometer, used especially for recording variations in the earth's magnetic field.

Origin:
1840–50; magneto- + -graph

magnetographic [mag-nee-tuh-graf-ik] , adjective
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World English Dictionary
magnetograph (mæɡˈniːtəʊˌɡrɑːf, -ˌɡræf)
 
n
a recording magnetometer, usually used for studying variations in the earth's magnetic field

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American Heritage
Science Dictionary
magnetograph   (māg-nē'tō-grāf')  Pronunciation Key 
A recording of the strength and direction of a magnetic field made by a magnetometer. Also called magnetogram. See magnetometer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Another instrument, known as an imaging magnetograph, will provide two-dimensional magnetic field maps.
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