plural auroras or aurorae
ə-ˈrȯr-(ˌ)ē 
ȯ-
1
: dawn
2
capitalized
: the Roman goddess of dawn compare eos
3
: 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
Synonyms
Examples of aurora in a Sentence
a gorgeous pink aurora aroused us out of our slumber
Recent Examples on the Web
Back at the cabin, relax by the indoor fireplace or hang outside after dusk to watch for one of the Upper Peninsula’s greatest treats: the aurora borealis.
—
Stephanie Vermillion, Outside Online, 6 Nov. 2024
These events interact with the Earth’s magnetic field, often pulling aurora borealis below the Canadian border.
—Ty Roush, Forbes, 1 Nov. 2024
Named after the first European settlers to travel through this part of the world, this park near the Canadian border is known for its waterways, its dark, starry skies, and the regular appearance of the aurora borealis.
—Lydia Mansel, Travel + Leisure, 29 Oct. 2024
From a supermoon to multiple aurora borealis displays, October has hosted countless celestial events for sky gazers —with one more potentially on the way.
—Cailey Gleeson, Journal Sentinel, 23 Oct. 2024
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Stephanie Vermillion, Outside Online, 6 Nov. 2024
These events interact with the Earth’s magnetic field, often pulling aurora borealis below the Canadian border.
—Ty Roush, Forbes, 1 Nov. 2024
Named after the first European settlers to travel through this part of the world, this park near the Canadian border is known for its waterways, its dark, starry skies, and the regular appearance of the aurora borealis.
—Lydia Mansel, Travel + Leisure, 29 Oct. 2024
From a supermoon to multiple aurora borealis displays, October has hosted countless celestial events for sky gazers —with one more potentially on the way.
—Cailey Gleeson, Journal Sentinel, 23 Oct. 2024
See all Example Sentences for aurora
Dictionary Entries Near aurora
Cite this Entry
“Aurora.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aurora. Accessed 28 Nov. 2024.
Copy CitationGeographical Definition
Aurora
geographical name
Au·ro·ra
ə-ˈrȯr-ə
ȯ-
1
city in north central Colorado east of Denver population 325,078
2
city west of Chicago in northeastern Illinois population 197,899
3
town north of Toronto in southeastern Ontario, Canada population 53,203
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