Corona definition

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

(architecture) The projecting top part of a cornice.

(botany) A crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers, such as a daffodil.

(electricity) A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.

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.

The luminous irregular envelope of extremely hot and highly ionized gas located outside the chromosphere of the sun.

A crown or something resembling a crown.

A circular chandelier hanging from a church ceiling.

(bot.) An extra whorl of flower parts between the corolla and the stamens, as in the daffodil, forming a crownlike or cuplike part.

(elec.) A luminous discharge that may occur around a high-voltage conductor due to ionization of the surrounding air.

A crownlike part.

The crown of a tooth, of a skull, etc.

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.

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.

(place) City in S Calif.

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

(botany) A crown-shaped, funnel-shaped, or trumpet-shaped outgrowth or appendage of the perianth of certain flowers, such as a daffodil.

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.

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.

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.

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

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

(electricity) Corona discharge.

A cigar with a long tapering body and blunt ends.

(archit.) The top projection of a cornice.

A long cigar with straight sides and blunt ends.