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Aurora

[uh-rawr-uh, uh-rohr-uh] /əˈrɔr ə, əˈroʊr ə/
noun, plural Auroras, Aurorae [uh-rawr-ee, uh-rohr-ee] /əˈrɔr i, əˈroʊr i/ (Show IPA), for 2, 3.
1.
the ancient Roman goddess of the dawn.
Compare Eos.
2.
(lowercase) dawn.
3.
(lowercase) Meteorology. a radiant emission from the upper atmosphere that occurs sporadically over the middle and high latitudes of both hemispheres in the form of luminous bands, streamers, or the like, caused by the bombardment of the atmosphere with charged solar particles that are being guided along the earth's magnetic lines of force.
4.
a city in central Colorado, near Denver.
5.
a city in NE Illinois.
6.
a female given name.
Origin
1350-1400
1350-1400; Middle English < Latin aurōra dawn, dawn goddess, east
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for Aurora
  • The southern lights, an Aurora that appears in the southern hemisphere.
  • The northern lights, an Aurora that appears in the northern hemisphere.
British Dictionary definitions for Aurora

aurora

/ɔːˈrɔːrə/
noun (pl) -ras, -rae (-riː)
1.
an atmospheric phenomenon consisting of bands, curtains, or streamers of light, usually green, red, or yellow, that move across the sky in polar regions. It is caused by collisions between air molecules and charged particles from the sun that are trapped in the earth's magnetic field
2.
(poetic) the dawn
Derived Forms
auroral, adjective
aurorally, adverb
Word Origin
C14: from Latin: dawn; see east

Aurora1

/ɔːˈrɔːrə/
noun
1.
the Roman goddess of the dawn Greek counterpart Eos
2.
the dawn or rise of something

Aurora2

/ɔːˈrɔːrə/
noun
1.
another name for Maewo
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for Aurora
aurora
late 14c., from L. Aurora, the Roman goddess of dawn, from PIE *ausus- "dawn," also the name of the Indo-European goddess of the dawn, from base *aus- "to shine," especially of the dawn (cf. Gk. eos "dawn," auein "to dry, kindle;" Skt. usah, Lith. ausra "dawn;" L. auster "south wind," usum "to burn;" O.E. east "east").
Online Etymology Dictionary, © 2010 Douglas Harper
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Aurora in Science
aurora
  (ə-rôr'ə)   
Plural auroras or aurorae (ə-rôr'ē)
A brilliant display of bands or folds of variously colored light in the sky at night, especially in polar regions. Charged particles from the solar wind are channeled through the Earth's magnetic field into the polar regions. There the particles collide with atoms and molecules in the upper atmosphere, ionizing them and making them glow. Auroras are of greatest intensity and extent during periods of increased sunspot activity, when they often interfere with telecommunications on Earth. ◇ An aurora that occurs in southern latitudes is called an aurora australis (ô-strā'lĭs) or southern lights. When it occurs in northern latitudes it is called an aurora borealis (bôr'ē-āl'ĭs) or northern lights. See also magnetic storm.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Aurora in Technology


["The Aurora Or-Parallel Prolog System", E. Lusk et al, Proc 3rd Intl Conf on Fifth Generation Comp Systems, pp. 819-830, ICOT, A-W 1988].

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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