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n. pl. aurora bo·re·al·is·es (-ĭ-sĭz) or aurorae borealis
An aurora that occurs in northern regions of the earth. Also called northern lights.
[New Latin aurōra boreālis : Latin aurōra, dawn + Latin boreālis, northern.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Physical Geography) (sometimes capital) the aurora seen around the North Pole. Also called: northern lights
[C17: New Latin: northern aurora]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
auro′ra bo•re•al′is(ˌbɔr iˈæl ɪs, -ˈeɪ lɪs, ˌboʊr-)
the aurora of the Northern Hemisphere. Also called northern lights, auro′ra polar′is.
[1621; < New Latin: northern aurora; see boreal]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
An aurora that occurs in northern regions of the Earth. Also called northern lights.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||aurora borealis - the aurora of the northern hemisphere|
aurora - an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force
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Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
aurora borealis[ɔːˈrɔːrəbɔːrɪˈeɪlɪs] n → aurora boreale
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995