: 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

Word History


magnet- + tail

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of magnetotail was in 1968

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Dictionary Entries Near magnetotail

Cite this Entry

“Magnetotail.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2024.

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