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aurora Definition
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aurora
noun(au-ro-ra)dawn
aurora
noun(au-ro-ra)the Roman goddess of dawn
aurora
noun(au-ro-ra)a luminous phenomenon that consists of streamers or arches of light appearing in the upper atmosphere of a planet's magnetic polar regions and is caused by the emission of light from atoms excited by electrons accelerated along the planet's magnetic field lines
aurora
geographical name(au-ro-ra)city in north central Colorado east of Denver population 325,078
aurora
geographical name(au-ro-ra)city west of Chicago in northeastern Illinois population 197,899
aurora
geographical name(au-ro-ra)town north of Toronto in southeastern Ontario, Canada population 53,203
aurora
noun(au-ro-ra)an aurora that occurs in earth's southern hemisphere —called also southern lights
aurora
noun(au-ro-ra)an aurora that occurs in earth's northern hemisphere —called also northern lights