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corona definition

co·rona (kə rō′nə)

noun pl. coronas -·nas or coronae -·nae (-nē)

  1. a crown or something resembling a crown
  2. a circular chandelier hanging from a church ceiling
  3. a long cigar with straight sides and blunt ends
  4. Anat.
    1. a crownlike part
    2. the crown of a tooth, of a skull, etc.
  5. Archit. the top projection of a cornice
  6. Astron.
    1. the layer of ionized gas surrounding the sun, characterized by an extremely low density, an extremely high temperature, and a constantly changing shape extending great distances from the sun: clearly visible during a total solar eclipse
    2. a ring of colored light seen around a luminous body, as the sun or moon, formed by the diffraction of light caused by mist, dust, etc.
  7. Bot. an extra whorl of flower parts between the corolla and the stamens, as in the daffodil, forming a crownlike or cuplike part
  8. Elec. a luminous discharge that may occur around a high-voltage conductor due to ionization of the surrounding air

Etymology: L, crown

Corona definition

Co·rona (kə rō′nə)

city in S Calif.: pop. 125,000

Etymology: Sp & L, wreath, crown: for the circular boulevard around the city

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:

medical corona definition - medical

corona Usage Examples

Converse of object

  • heat: Therefore, only a small fraction of the total energy out put from solar is required to heat the corona.

Converse of subject

  • surround: We know that during a total eclipse of the sun the moon is surrounded by a luminous corona.

Adjective modifier

  • solar: The solar corona is hotter than a million degrees Celsius The Sun is our nearest star.

Modifies a noun

  • ion: Figure 2. Schematic diagram showing the fate of corona ions in the atmosphere.

Noun used with modifier

  • line: These coronagraphs produce images of the " emission line corona.

Possessives

  • sun: A superb image of the sun's corona, captured during the 1999 total eclipse.
corona usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

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MLA Style

"corona." Webster's New World College Dictionary. 2009

  • Your Dictionary. 5 July 2009
  • <www.yourdictionary.com/corona>

APA Style

corona. (2009). In Webster's New World College Dictionary

  • Retrieved July 5th, 2009, from www.yourdictionary.com/corona

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