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

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, 8 May 2018 Recent Examples on the Web: Adjective The weather forecasting service also said that minor geomagnetic storms may continue Tuesday, before a fast wind from a coronal hole may arrive, continuing a rather active period of geomagnetic activity. Katie Hunt, CNN, 12 Oct. 2021 For example, a coronal hole – a magnetically open area from which high-speed solar wind is released into space – caps the northern polar region on the sun. Julia Musto, Fox News, 20 June 2021 Solar flares and coronal mass ejections can wreak havoc on Earth’s magnetic field, causing blackouts for satellites and other spacecraft. Joshua Hawkins, BGR, 20 May 2022 The mission, a joint effort between NASA and the European Space Agency, captured views of powerful flares and coronal mass ejections and perspectives of the unexplored solar poles. Ashley Strickland, CNN, 18 May 2022 Coronal mass ejections are expulsions of plasma and magnetic field from the sun's corona, sending tons of coronal material outward at speeds ranging from 250 kilometers per second to as fast as near 3,000 km/s. Miriam Marini, Detroit Free Press, 29 Mar. 2022 The especially good aurora forecast is thanks to gusts of solar wind — known as coronal mass ejections — heading toward Earth, according to Don Hampton, research associate professor at the University of Alaska Fairbanks Geophysical Institute. Morgan Krakow, Anchorage Daily News, 31 Mar. 2022 The Earth is directly in the path of two coronal mass ejections. Doyle Rice, USA TODAY, 30 Mar. 2022 The solar wind, while continuous, can become violent when the sun throws out gigantic eruptions of particles known as coronal mass ejections. New York Times, 17 Mar. 2022 See More

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.

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

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Dictionary Entries Near coronal



coronal mass ejection

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Cite this Entry

“Coronal.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2022.

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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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