plural auroras or aurorae
ə-ˈrȯr-(ˌ)ē 
ȯ-
1
: dawn
2
Aurora
: 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
Examples of aurora in a Sentence
a gorgeous pink aurora aroused us out of our slumber
Recent Examples on the Web
Keep in mind that tonight's Strawberry Moon may make auroras harder to see due to the bright moonlight.
—
Michele Laufik,
Martha Stewart,
29 June 2026
Seeing these spectacular, colorful displays in the sky is on many people's bucket list, as auroras can light up the sky in a rainbow of colors.
—
Chelsea Gohd,
Space.com,
26 June 2026
These events create giant rotating auroras that can span hundreds or even thousands of kilometers.
—
Rupendra Brahambhatt,
Interesting Engineering,
21 June 2026
However, the agency is not forecasting any space weather, such as solar winds, which can make the aurora more visible and vivid for viewers.
—
Zachary Folk,
Forbes.com,
18 June 2026
See All Example Sentences for aurora
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Michele Laufik,
Martha Stewart,
29 June 2026
Seeing these spectacular, colorful displays in the sky is on many people's bucket list, as auroras can light up the sky in a rainbow of colors.
—
Chelsea Gohd,
Space.com,
26 June 2026
These events create giant rotating auroras that can span hundreds or even thousands of kilometers.
—
Rupendra Brahambhatt,
Interesting Engineering,
21 June 2026
However, the agency is not forecasting any space weather, such as solar winds, which can make the aurora more visible and vivid for viewers.
—
Zachary Folk,
Forbes.com,
18 June 2026
See All Example Sentences for aurora
Cite this Entry
“Aurora.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aurora. Accessed 5 Jul. 2026.
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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