cor·​o·​nal | \ ˈkȯr-ə-nᵊl How to pronounce coronal (audio) , ˈkär- \
variants: or less commonly coronel

Definition of coronal

 (Entry 1 of 2)

: a circlet for the head usually implying rank or dignity


co·​ro·​nal | \ ˈkȯr-ə-nᵊl How to pronounce coronal (audio) , ˈkär-; kə-ˈrō- How to pronounce coronal (audio) \

Definition of coronal (Entry 2 of 2)

1a : lying in the direction of the coronal suture
b : of or relating to the frontal plane that passes through the long axis of the body
2 : of or relating to a corona or crown

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Synonyms for coronal

Synonyms: Noun

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Examples of coronal in a Sentence

Noun a Renaissance portrait of a nobel woman of Florence wearing a bejeweled coronal
Recent Examples on the Web: Noun The dramatic coronal headpiece was meant to evoke the Virgin Mary. New York Times, "In the Name of Cardi, Let Us Pray," 8 May 2018 Recent Examples on the Web: Adjective Originating from a variety of processes, solar flares, coronal mass ejections, and other magnetic reconnection events can occur, sending out a stream of energetic particles in a particular direction. Ethan Siegel, Forbes, "Ask Ethan: How Prepared Are We For The Next Giant Solar Flare?," 26 Feb. 2021 Large flares can produce coronal mass ejections (CMEs), waves of solar plasma and charged particles that can travel millions of miles an hour through space. Laura Geggel, Scientific American, "Strong Solar Flares This Week a Rare Double Whammy, Scientists Say," 12 Sep. 2014 Still, coronal mass ejections are observationally elusive, and not everyone is convinced that the team truly spotted one. Paola Rosa-aquino, Popular Science, "Violent space weather could limit life on nearby exoplanets," 11 Dec. 2020 During its time in space, the SDO has also observed solar tornadoes, giant waves in plasma on the solar surface, polar coronal holes and magnetic explosions. James Rogers, Fox News, "NASA image shows spooky 'Halloween' sun," 29 Oct. 2020 Plus … the Sun bombarded our planet with violent outbursts of radiation called flares and coronal mass ejections. oregonlive, "NASA teases ‘exciting new discovery’ about moon as it plans for 2024 return to lunar surface as first step toward Mars," 22 Oct. 2020 Inouye hopes to tackle the coronal heating mystery. Nola Taylor Redd, Smithsonian Magazine, "How Three New Tools Will Revolutionize Our Understanding of the Sun," 28 Aug. 2020 Solar Orbiter will also inspect the charge particles that ride on solar winds burped out by the sun and study how space weather creates powerful solar storms, called coronal mass ejections. Jennifer Leman, Popular Mechanics, "This Is the Closest Image of the Sun Ever Taken. Ever.," 16 July 2020 For instance, coronal mass ejections from the sun shoot charged particles into space that can collide with the Earth’s atmosphere and disrupt satellites, telecommunications and navigation systems, and power grids. Brigit Katz, Smithsonian Magazine, "See the Sun’s Surface Move in ‘Unprecedented’ Detail," 30 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coronal.' 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 coronal


14th century, in the meaning defined above


14th century, in the meaning defined at sense 1a

History and Etymology for coronal


Middle English coronal, borrowed from Anglo-French coronel, corinal, probably borrowed from Medieval Latin corōnāle, noun derivative from neuter of Latin corōnālis "of a wreath or garland" — more at coronal entry 2


Middle English coronale, borrowed from Medieval Latin corōnālis "of the forehead or crown of the head," going back to Latin, "of a wreath or garland," from corōna "garland worn on the head as a mark of honor or emblem of majesty, halo around a celestial body" + -ālis -al entry 1 — more at crown entry 1

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Time Traveler for coronal

Time Traveler

The first known use of coronal was in the 14th century

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Cite this Entry

“Coronal.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2021.

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More Definitions for coronal


co·​ro·​nal | \ ˈkȯr-ən-ᵊl How to pronounce coronal (audio) , ˈkär-; kə-ˈrōn- How to pronounce coronal (audio) \

Medical Definition of coronal

1 : of, relating to, or being a corona
2 : lying in the direction of the coronal suture
3 : of or relating to the frontal plane that passes through the long axis of the body

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