Illustration of corona
- a corona 2c
plural coronas
1
: the projecting part of a classic cornice
2
: something suggesting a crown: such as
a
plural coronae
kə-ˈrō-(ˌ)nē 
also coronas
also coronas
(1)
: a usually colored circle often seen around and close to a luminous body (such as the sun or moon) caused by diffraction produced by suspended droplets or occasionally particles of dust
(2)
: the tenuous outermost part of the atmosphere of a star (such as the sun)
(3)
: a circle of light made by the apparent convergence of the streamers of the aurora borealis
b
: the upper portion of a bodily part (such as a tooth or the skull)
c
: an appendage or series of united appendages on the inner side of the corolla in some flowers (such as the daffodil, jonquil, or milkweed)
d
: a faint glow adjacent to the surface of an electrical conductor at high voltage
e
informal
: coronavirus
In the fight against the consequences of the corona epidemic, the Italian government is resorting to radical measures.—
Anne Kunz et al.
Anne Kunz et al.3
[from La Corona, a trademark]
: a long cigar having the sides straight to the end to be lit and being roundly blunt at the other end
Examples of corona in a Sentence
Recent Examples on the Web
Of particular interest for Parker is the mysterious heating of the sun's corona and the origins of the solar wind in the solar system.
—Jamie Carter, Forbes, 27 Dec. 2024
Scientists hope the probe will help explain why the outer layers of the sun's atmosphere, like its corona, are so much hotter than the surface of the star itself.
—Tariq Malik, Space.com, 26 Dec. 2024
The sun's outermost layer, the elusive corona, was brighter, the moon appeared larger and the uncharacteristic darkness known as totality lasted just a bit longer.
—Eric Lagatta, USA TODAY, 16 Dec. 2024
They can be displayed as bands, curtains, rays, or coronas.
—Bailey Berg, AFAR Media, 16 Jan. 2025
See all Example Sentences for corona 
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Jamie Carter, Forbes, 27 Dec. 2024
Scientists hope the probe will help explain why the outer layers of the sun's atmosphere, like its corona, are so much hotter than the surface of the star itself.
—Tariq Malik, Space.com, 26 Dec. 2024
The sun's outermost layer, the elusive corona, was brighter, the moon appeared larger and the uncharacteristic darkness known as totality lasted just a bit longer.
—Eric Lagatta, USA TODAY, 16 Dec. 2024
They can be displayed as bands, curtains, rays, or coronas.
—Bailey Berg, AFAR Media, 16 Jan. 2025
See all Example Sentences for corona
Dictionary Entries Near corona
Cite this Entry
“Corona.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corona. Accessed 12 Feb. 2025.
Copy CitationKids Definition
corona
noun
co·ro·na
kə-ˈrō-nə
1
: a usually colored circle often seen around and close to a shining body (as the sun or moon)
2
: the outermost part of the atmosphere of a star (as the sun)
3
: a faint glow next to the surface of an electrical conductor at high voltage
coronal
adjective
ˈkȯr-ən-ᵊl
ˈkär-;
kə-ˈrōn-
Medical Definition
corona
noun
co·ro·na
kə-ˈrō-nə
1
: the upper portion of a bodily part (as a tooth or the skull)
2
informal
: coronavirus
Geographical Definition
Corona
geographical name
Co·ro·na
kə-ˈrō-nə
city in southern California east of Los Angeles population 152,374
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