单词 | Aurora |
释义 | Aurora1/əˈrôrə![]() 1A city in north central Colorado, east of Denver; population 319,057 (est. 2008). 2An industrial city in northeastern Illinois; population 171,782 (est. 2008). aurora2/ɔːˈrɔːrə![]() noun (plural auroras or aurorae /ɔːˈrɔːriː/) 1A natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole. The effect is caused by the interaction of charged particles from the sun with atoms in the upper atmosphere. In northern and southern regions it is respectively called aurora borealis or Northern Lights and aurora australis or Southern Lights.The Hubble Space Telescope has spotted auroras near the poles of both Saturn and Jupiter....
Borealis from Latin, 'northern', based on Greek Boreas, the god of the north wind; australis from Latin, 'southern', from Auster 'the south, the south wind' 2 literary The dawn. Derivativesauroral![]()
OriginLate Middle English (originally in sense 2): from Latin, 'dawn, goddess of the dawn'. sense 1 dates from the early 18th century. RhymesAurora3/ɔːˈrɔːrə![]() Roman Mythology Goddess of the dawn. Greek equivalent Eos. |
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