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extraordinary wave

noun, Radio.
(of the two waves into which a radio wave is divided in the ionosphere under the influence of the earth's magnetic field) the wave with characteristics different from those that the undivided wave would have exhibited in the absence of the magnetic field.
Also called X-wave.
Compare ordinary wave.
Origin of extraordinary wave
First recorded in 1880-85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for extraordinary wave
Historical Examples
  • However, neither Luke Trull nor any extraordinary wave of natural predators had as yet attacked the muskrat colonies.

    Swamp Cat James Arthur Kjelgaard
  • An extraordinary wave of emotion came over him, finely strung as he was, and susceptible to all grades of feeling.

    Halcyone Elinor Glyn
  • How are we to account for this extraordinary wave of Cabalism in Western Europe?

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