Electro-jet

electrojet

[ih-lek-truh-jet]
noun Geophysics.
a current of ions existing in the upper atmosphere, moving with respect to the surface of the earth, and causing various auroral phenomena.

Origin:
1950–55; electro- + jet1

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electrojet (ɪˈlɛktrəʊˌdʒɛt)
 
n
a narrow belt of fast-moving ions in the ionosphere, under the influence of the earth's magnetic field, causing auroral displays

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