co·​ro·​na | \ kə-ˈrō-nə How to pronounce corona (audio) \
plural coronas

Essential Meaning of corona

technical : a bright circle seen around the sun or the moon

Full Definition of corona

 (Entry 1 of 2)

1 : the projecting part of a classic cornice
2 : something suggesting a crown: such as
a plural coronae\ kə-​ˈrō-​(ˌ)nē How to pronounce corona (audio) \ 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.
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


geographical name
Co·​ro·​na | \ kə-ˈrō-nə How to pronounce Corona (audio) \

Definition of Corona (Entry 2 of 2)

city in southern California east of Los Angeles population 152,374

Illustration of corona

Illustration of corona


a corona 2c

In the meaning defined above

Examples of corona in a Sentence

Recent Examples on the Web: Noun The coronal mass ejection -- a large expulsion of plasma and magnetic field from the sun's corona -- is expected to reach Earth Saturday evening, with effects continuing into Sunday, NOAA said. Meredith Deliso, ABC News, 30 Oct. 2021 People call it the corona-coaster for a reason, and while this latest plunge might be a bit stomach-churning, the end of the ride is still getting closer. Jesse Ashlock, Condé Nast Traveler, 5 Oct. 2021 The Sun’s corona is almost always blocked from view by the brighter disk of the Sun. Jamie Carter, Forbes, 28 Sep. 2021 The sun emits hot, ionized gas from its corona that extends into space and can obstruct radio signals and engineers' commands and communications to spacecraft. Julia Musto, Fox News, 2 Oct. 2021 There’s only one scenario where a glimpse of the corona is possible to us on Earth and that’s during a total solar eclipse. Jamie Carter, Forbes, 28 Sep. 2021 The swarm could be made of many individual collectors placed all around the different parts of a black hole in order to best collect from the accretion disk, the corona, and the relativistic jets. Caroline Delbert, Popular Mechanics, 6 Sep. 2021 This isn't unlike the sun's corona, or hot outer atmosphere. Rebecca Cairns; Video By Milly Chan, CNN, 12 Aug. 2021 The Sun’s corona releases energy in flares containing hot ionised gas, which travel towards Earth. Jamie Carter, Forbes, 20 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'corona.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of corona


1563, in the meaning defined at sense 1

History and Etymology for corona


borrowed from Latin corōna "garland worn on the head as a mark of honor or emblem of majesty, halo around a celestial body, top part of an entablature" — more at crown entry 1

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Dictionary Entries Near corona

coromandel wood



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Last Updated

2 Nov 2021

Cite this Entry

“Corona.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2021.

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More Definitions for corona


co·​ro·​na | \ kə-ˈrō-nə How to pronounce corona (audio) \

Medical Definition of corona

1 : the upper portion of a bodily part (as a tooth or the skull)
2 informal : coronavirus

More from Merriam-Webster on corona

Thesaurus: All synonyms and antonyms for corona

Nglish: Translation of corona for Spanish Speakers Encyclopedia article about corona


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