corona

noun
co·​ro·​na | \ kə-ˈrō-nə \
plural coronas

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 \ 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
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

Corona

geographical name
Co·​ro·​na | \ kə-ˈrō-nə \

Definition of Corona (Entry 2 of 2)

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

Illustration of corona

Illustration of corona

Noun

a corona 2c

In the meaning defined above

Examples of corona in a Sentence

Recent Examples on the Web: Noun

This instrument will measure magnetic and electric fields in the sun's atmosphere to help scientists better understand why the corona is so much hotter than the photosphere. Elizabeth Howell, Space.com, "Here Comes the Sun! Parker Solar Probe Instruments See 'First Light'," 25 Sep. 2018 One of the greatest mysteries of the sun is the extraordinary temperature of its corona. Jay Bennett, Popular Mechanics, "The New Science of the Sun Will Be Astounding—And Possibly Terrifying," 9 Aug. 2018 Additionally, the corona is constantly breaking away from the Sun, flowing outward and bathing the planets in the Solar System. Loren Grush, The Verge, "Watch a spacecraft get blasted to the Sun tomorrow morning," 10 Aug. 2018 After 24 orbits around the sun, the probe will be in position to make the closest-ever recordings of the sun’s corona. Brian Resnick, Vox, "Watch NASA launch the Parker Solar Probe toward the sun," 10 Aug. 2018 Whatever mystery action heats the corona also accelerates solar particles to extreme supersonic speeds of up to a million mph. Jay Bennett, Popular Mechanics, "The New Science of the Sun Will Be Astounding—And Possibly Terrifying," 9 Aug. 2018 Venus also looms large for NASA’s Parker Solar Probe, which recently launched on a historic mission to explore the Sun’s corona. Fox News, "NASA eyes stunning 'cloud city' airship concept to explore Venus," 16 Oct. 2018 Twenty-four such orbits — dipping into the sun’s upper atmosphere, or corona — are planned over the next seven years. Marcia Dunn, The Seattle Times, "NASA’s Parker Solar Probe swinging by Venus on way to sun," 2 Oct. 2018 The corona's temperature ranges from 1.7 million degrees Fahrenheit (1 million degrees Celsius) to more than 17 million degrees F (10 million degrees C), according to the National Solar Observatory. Elizabeth Howell, Space.com, "Here Comes the Sun! Parker Solar Probe Instruments See 'First Light'," 25 Sep. 2018

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

Noun

1548, in the meaning defined at sense 1

History and Etymology for corona

Noun

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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Statistics for corona

Last Updated

2 Jan 2019

Look-up Popularity

Time Traveler for corona

The first known use of corona was in 1548

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More Definitions for corona

corona

noun

English Language Learners Definition of corona

: a bright circle seen around the sun or the moon

corona

noun
co·​ro·​na | \ kə-ˈrō-nə \

Medical Definition of corona

: the upper portion of a bodily part (as a tooth or the skull)

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More from Merriam-Webster on corona

Rhyming Dictionary: Words that rhyme with corona

Spanish Central: Translation of corona

Nglish: Translation of corona for Spanish Speakers

Britannica.com: Encyclopedia article about corona

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