corona

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

Noun

a corona 2c

In the meaning defined above

Examples of corona in a Sentence

Recent Examples on the Web: Noun

During an eclipse, only the sun’s corona is visible to the naked eye. Leada Gore | Lgore@al.com, al.com, "Total solar eclipse 2019: How to see today’s South American eclipse; times; NASA livestream," 2 July 2019 Special for Science This weekend's celestial alignment is a special chance for professional astronomers to study the corona, the outer atmosphere of the sun, which is usually hidden by the glare of the sun. Andrew Fazekas, National Geographic, "How to watch South America’s total eclipse from anywhere," 2 July 2019 For one thing, the corona is about 300 times hotter than the surface of the Sun, which doesn’t make much sense to researchers. Loren Grush, The Verge, "Watch a spacecraft get blasted to the Sun tomorrow morning," 10 Aug. 2018 The second prevailing theory of coronal heating involves waves of energy, known as Alfvén waves, traveling back and forth between the sun's surface and corona. Jay Bennett, Popular Mechanics, "The New Science of the Sun Will Be Astounding—And Possibly Terrifying," 9 Aug. 2018 Parker will be the first spacecraft to fly through the Sun’s corona, the outermost part of the star’s atmosphere. James Rogers, Fox News, "NASA's Parker Solar Probe gets closer to 'touching the Sun'," 6 Sep. 2018 From the corona, these particles collectively stream out into space as solar wind. Robin Seemangal, Popular Mechanics, "A Workhorse Rocket Maker Tries to Touch the Sun—And Stay Relevant," 16 Aug. 2018 After all, its traveling into the outer layer of the sun, known as the corona, which is going to be closer to a star than any manmade object in history. David Grossman, Popular Mechanics, "Why the Sun-Studying Parker Space Probe Won't Melt," 20 July 2018 If all goes according to plan, the Parker Solar Probe will fly through the sun's outer atmosphere, or corona, 24 times over the next seven years. Mike Wall, Space.com, "A Fireball and a Wall of Sound: What NASA's Epic Solar Probe Launch Felt Like," 14 Aug. 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.

See More

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

Keep scrolling for more

Learn More about corona

Statistics for corona

Last Updated

17 Jul 2019

Look-up Popularity

Time Traveler for corona

The first known use of corona was in 1548

See more words from the same year

Keep scrolling for more

More Definitions for corona

corona

noun

English Language Learners Definition of corona

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

corona

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

Medical Definition of corona

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

Keep scrolling for more

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

Comments on corona

What made you want to look up corona? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to form ideas or theories about something

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!