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A Writer's Dictionary:

aurora Definition


Dictionary Home » Words Starting with A » Auld Reekie ... authorize » aurora


aurora
noun auroras, aurorae
    1. astron.
      The appearance of diffuse bands of coloured lights in the night sky, most often observed from the Arctic and Antarctic regions, caused by a burst of charged particles from the Sun which collide with oxygen and nitrogen atoms in the upper atmosphere to produce electrical discharges. See also aurora australis, aurora borealis.
    2. poetic
      The dawn.
Etymology: 15c: Latin, meaning ‘dawn'.



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