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magnetic declination
magnetic dip
magnetic disk
magnetic epoch
magnetic equator
magnetic field
magnetic flux
magnetic flux density
magnetic head
magnetic induction
magnetic leakage
magnetic levitation
magnetic meridian
magnetic mine
magnetic mirror
magnetic moment
magnetic needle
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magnetic storm
mag·net·ic storm (plural mag·net·ic storms)


noun 
Definition:
 
disturbance in Earth's magnetic field: a disturbance in the Earth's magnetic field associated with charged particles from solar flares and sunspot activity
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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