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Related to auroral: auroral oval


n. pl. au·ro·ras or au·ro·rae (ə-rôr′ē)
1. A luminous atmospheric phenomenon appearing as streamers or bands of light sometimes visible in the night sky in northern or southern regions of the earth. It is thought to be caused by charged particles from the sun entering the earth's magnetic field and stimulating molecules in the atmosphere.
2. The dawn.

[Middle English, dawn, from Latin aurōra; see aus- in Indo-European roots.]

au·ro′ral, au·ro′re·an (-ē-ən) adj.
au·ro′ral·ly adv.

Au·ro·ra 1

n. Roman Mythology
The goddess of the dawn.

[Latin Aurōra; see aurora.]

Au·ro·ra 2

1. A city of north-central Colorado, a residential suburb of Denver.
2. A city of northeast Illinois on the Fox River west of Chicago. It developed as an industrial center.
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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.auroral - of or relating to the atmospheric phenomenon aurorasauroral - of or relating to the atmospheric phenomenon auroras; "a prominent green line in the spectrum of the auroras is called the `auroral line'"
2.auroral - characteristic of the dawnauroral - characteristic of the dawn; "a dim auroral glow"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
VIGILANS--The Laws of Auroral Derangements are still imperfectly understood.
High overhead was the spirit-like blue of paling skies; the east was a great arc of crystal, smitten through with auroral crimsonings; just above it was one milk-white star of morning, like a pearl on a silver sea.
To my imagination it retained throughout the day more or less of this auroral character, reminding me of a certain house on a mountain which I had visited a year before.
That man who does not believe that each day contains an earlier, more sacred, and auroral hour than he has yet profaned, has despaired of life, and is pursuing a descending and darkening way.
The data showed that in what are called "neutral upwelling events," multiple passes of auroral arcs moving poleward introduced energy that created the upwelling air that interferes with satellites.
Diaz, 30, residents of Barangay Auroral, Taganaan, were retrieved on Tuesday and brought to the town proper for post mortem examination.
Complicating the matter was the fact that STEVE can appear during solar-induced magnetic storms around Earth that power the brightest auroral lights.
This wasn't the only light show NASA created as the space agency also made an amazing light show with chemical compounds that were ejected by the Auroral Zone Upwelling Rocket Experiment (AZURE).
'We are above the main obstacle, cloud cover, and also have a much wider overall view of the Auroral Oval from around 36000ft above sea level, than you do at ground level.'
I have used GRACE data for space weather studies on how much auroral currents heat and expand the thermosphere.