[ kuh-roh-nuh ]
See synonyms for corona on
noun,plural co·ro·nas, co·ro·nae [kuh-roh-nee]. /kəˈroʊ ni/.
  1. a white or colored circle or set of concentric circles of light seen around a luminous body, especially around the sun or moon.

  2. Meteorology. such a circle or set of circles having a small radius and ranging in color from blue inside to red outside, attributable to the diffraction caused by thin clouds, mist, or sometimes dust (distinguished from halo).

  1. Also called au·re·o·la [aw-ree-uh-luh, uh-ree-], /ɔˈri ə lə, əˈri-/, aureole .Astronomy. a faintly luminous envelope outside of the sun's chromosphere, the inner part consisting of highly ionized elements.

  2. a long, straight, untapered cigar, rounded at the closed end.

  3. Botany. a crownlike appendage, especially one on the inner side of a corolla, as in the narcissus.

  4. Anatomy. the upper portion or crown of a part, as of the head.

  5. any part or structure suggestive of a crown or curved crown shape.

  6. Pathology. a coronavirus, especially COVID-19.

  7. Electricity. corona discharge.

  8. Architecture. the projecting, slablike member of a classical cornice supported by the bed molding or by modillions, dentils, etc., and supporting the cymatium.

  9. the tonsure of a cleric.

  10. Ecclesiastical. a gold-colored stripe around the lower edge of a clerical headdress, as of a miter.

  11. a chandelier of wrought metal, having the form of one or more concentric hoops.

Origin of corona

First recorded in 1555–65; from Latin corōna “garland, crown” (see crown), from Greek korṓnē “crown, curved object”; akin to korōnís “curved, beaked,” kórax “crow, raven” (see crow1)

Words Nearby corona

Other definitions for Corona (2 of 2)

[ kuh-roh-nuh ]

  1. a city in southeastern California. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use corona in a sentence

British Dictionary definitions for corona


/ (kəˈrəʊnə) /

nounplural -nas or -nae (-niː)
  1. a circle of light around a luminous body, usually the moon

  2. Also called: aureole the outermost region of the sun's atmosphere, visible as a faint halo during a solar eclipse

  1. architect the flat vertical face of a cornice just above the soffit

  2. something resembling a corona or halo

  3. a circular chandelier suspended from the roof of a church

  4. botany

    • the trumpet-shaped part of the corolla of daffodils and similar plants; the crown

    • a crown of leafy outgrowths from inside the petals of some flowers

  5. anatomy a crownlike structure, such as the top of the head

  6. zoology the head or upper surface of an animal, such as the body of an echinoid or the disc and arms of a crinoid

  7. a long cigar with blunt ends

  8. physics short for corona discharge

Origin of corona

C16: from Latin: crown, from Greek korōne anything curved; related to Greek korōnis wreath, korax crow, Latin curvus curved

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for corona


[ kə-rō ]

Plural coronas coronae (kə-rō)
  1. The luminous, irregular envelope of gas outside the chromosphere of a star. The Sun's corona is composed of ionized gas between approximately 1,000,000°K and 2,000,000°K and has an extremely low density. This phenomenon is visible only during a solar eclipse.

  2. A faintly colored luminous ring appearing to surround a celestial body (such as the Moon or Sun) that is visible through a haze or thin cloud, caused by diffraction of light from suspended matter in the intervening medium. Also called aureole

  1. A faint glow of the air in the region of very strong electric fields, caused by ionization of the air molecules and flow of current in that region in corona discharge.

  2. The crownlike upper portion of a bodily part or structure, such as the top of the head.

  3. A crown-shaped structure on the inner side of the petals of some flowers, such as the daffodil.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.