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magnetotail

[mag-nee-tuh-teyl] /mægˈni təˌteɪl/
noun, Astronomy
1.
the narrow and elongated region of the magnetosphere of the earth or of another planet that extends in the direction away from the sun.
Origin
1970-1975
1970-75; magneto- + tail1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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magneto-tail in Science
magnetotail
  (māg-nē'tō-tāl')   
The elongated extension of the Earth's magnetosphere on the side facing away from the Sun. The magnetotail is shaped by the pressure of the solar wind as it streams around the magnetosphere, compressing it on the side facing the Sun and stretching it on the opposite side into a long, taillike shape trailing far into interplanetary space. See more at magnetosphere.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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