nounpl. -·nas or -·nae
- a crown or something resembling a crown
- a circular chandelier hanging from a church ceiling
- a long cigar with straight sides and blunt ends
- a crownlike part
- the crown of a tooth, of a skull, etc.
- Archit. the top projection of a cornice
- 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.
- 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
Origin of coronaL, crown
Origin of CoronaSpanish and L, wreath, crown: so named for the circular boulevard around the city
nounpl. co·ro·nas, or co·ro·nae
- Astronomy a. 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. Also called aureole .b. The luminous irregular envelope of extremely hot and highly ionized gas located outside the chromosphere of the sun.
- Architecture An overhanging part near the top of a classical cornice, having a flat outer face.
- A cigar with a long tapering body and blunt ends.
- 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. Also called crown .
- Electricity A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.
Origin of coronaLatin corōna ; see crown .
(plural coronas or coronae or coronæ)
- A crown or garland bestowed among the Romans as a reward for distinguished services.
- (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,
- (biology) Any crown-like appendage of a plant or animal.
- (electricity) corona discharge
From Latin corōna (“garland, crown”), from Ancient Greek κορώνη (korōnē, “garland, wreath”).
corona - Computer Definition
(1) See corona wire.
(2) (Corona) The code name for Windows Media Player 9, introduced in 2003. It improved the Windows Media Video codec and added the Windows Media Audio Professional codec for 5.1 surround sound at 24 bit, 96 kHz sampling. It also included Fast Stream, providing instant-on audio and video streaming for high-bandwidth connections.