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
Stunning auroras are created when the particle stream interacts with gases in the planet's magnetic field.
—
George Petras, USA TODAY, 17 May 2024
Michiganders are familiar with the northern lights, also called the aurora borealis.
—Frank Witsil, Detroit Free Press, 14 May 2024
See all Example Sentences for aurora 
George Petras, USA TODAY, 17 May 2024
Michiganders are familiar with the northern lights, also called the aurora borealis.
—Frank Witsil, Detroit Free Press, 14 May 2024
See all Example Sentences for aurora
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'aurora.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Aurora.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aurora. Accessed 31 May. 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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