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3 dictionary results for: Coronas
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
co·ro·na       [kuh-roh-nuh] Pronunciation Key
–noun, plural -nas, -nae       [-nee] Pronunciation Key.
1.a white or colored circle or set of concentric circles of light seen around a luminous body, esp. 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).
3.Also called aureola, aureole. Astronomy. a faintly luminous envelope outside of the sun's chromosphere, the inner part consisting of highly ionized elements.
4.a long, straight, untapered cigar, rounded at the closed end.
5.Botany. a crownlike appendage, esp. one on the inner side of a corolla, as in the narcissus.
6.Anatomy. the upper portion or crown of a part, as of the head.
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: 1555–65; < L corōna garland, crown < Gk korné crown, curved object; akin to korōnís curved, beaked, kórax crow, raven]
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
co·ro·na       (kə-rō'nə)  Pronunciation Key 
n.   pl. co·ro·nas or co·ro·nae (-nē)
  1. Astronomy
    1. A faintly colored luminous ring appearing to surround a celestial body visible through a haze or thin cloud, especially such a ring around the moon or sun, caused by diffraction of light from suspended matter in the intervening medium. Also called aureole.
    2. The luminous irregular envelope of highly ionized gas outside the chromosphere of the sun.
  2. Architecture The projecting top part of a cornice.
  3. A cigar with a long tapering body and blunt ends.
  4. Anatomy The crownlike upper portion of a bodily part or structure, such as the top of the head.
  5. Botany A crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers, such as the daffodil or the spider lily. Also called crown.
  6. Electricity A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.


[Latin corōna; see crown.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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The American Heritage Science Dictionary - Cite This Source - Share This
corona       (kə-rō'nə)  Pronunciation Key 
Plural coronas or coronae (kə-rō'nē)
  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.
  3. 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.
  4. The crownlike upper portion of a bodily part or structure, such as the top of the head.
  5. A crown-shaped structure on the inner side of the petals of some flowers, such as the daffodil.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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