Corona definition

kə-rōnə
(anatomy) The crownlike upper portion of a bodily part or structure, such as the top of the head.
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(architecture) The projecting top part of a cornice.
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(botany) A crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers, such as a daffodil.
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(electricity) A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.
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A faintly colored luminous ring or halo appearing to surround a celestial body when viewed through a haze or thin cloud, especially such a ring around the moon or sun, caused by scattering or diffraction of light from suspended particulate matter in the intervening medium.
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The luminous irregular envelope of extremely hot and highly ionized gas located outside the chromosphere of the sun.
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A crown or something resembling a crown.
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A circular chandelier hanging from a church ceiling.
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(bot.) An extra whorl of flower parts between the corolla and the stamens, as in the daffodil, forming a crownlike or cuplike part.
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(elec.) A luminous discharge that may occur around a high-voltage conductor due to ionization of the surrounding air.
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A crownlike part.
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The crown of a tooth, of a skull, etc.
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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.
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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.
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(place) City in S Calif.
proper name
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(anatomy) The crownlike upper portion of a bodily part or structure, such as the top of the head.
noun
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(botany) A crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers, such as a daffodil.
noun
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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.
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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.
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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.
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The crownlike upper portion of a bodily part or structure, such as the top of the head.
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A crown-shaped structure on the inner side of the petals of some flowers, such as the daffodil.
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(1) See corona wire.
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A crown or garland bestowed among the Romans as a reward for distinguished services.
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(astronomy) The luminous plasma atmosphere of the Sun or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse,
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(biology) Any crown-like appendage of a plant or animal.
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(electricity) Corona discharge.
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A cigar with a long tapering body and blunt ends.
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(archit.) The top projection of a cornice.
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A long cigar with straight sides and blunt ends.
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Other Word Forms

Noun

Singular:
corona
Plural:
coronae

Origin of corona

  • Latin corōna crown

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin corōna (“garland, crown”), from Ancient Greek κορώνη (korōnē, “garland, wreath”).

    From Wiktionary