mag·​ne·​to·​tail | \ "+\

Definition of magnetotail

: the region of the magnetosphere of a celestial body (such as a planet) that is swept back by the solar wind in the direction away from the sun

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First Known Use of magnetotail

1968, in the meaning defined above

History and Etymology for magnetotail

magnet- + tail

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The first known use of magnetotail was in 1968

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