co·ro·na   (kə-rō'nə)    n.   pl. co·ro·nas or co·ro·nae (-nē) Astronomy 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. The luminous irregular envelope of highly ionized gas outside the chromosphere of the sun. Architecture The projecting top part of a cornice. 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 the daffodil or the spider lily. 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. [Latin corōna; see crown.]

Corona

Co*ro"na\ (k?-r?"n?), n.; pl. L. Coron[ae] (-n?), E. Coronas (-n?z). [L. corona crown. See Crown.]

1. A crown or garland bestowed among the Romans as a reward for distinguished services.

2. (Arch.) The projecting part of a Classic cornice, the under side of which is cut with a recess or channel so as to form a drip. See Illust. of Column.

3. (Anat.) The upper surface of some part, as of a tooth or the skull; a crown.

4. (Zo["o]l.) The shelly skeleton of a sea urchin.

5. (Astrol.) A peculiar luminous appearance, or aureola, which surrounds the sun, and which is seen only when the sun is totally eclipsed by the moon.

6. (Bot.) (a) An inner appendage to a petal or a corolla, often forming a special cup, as in the daffodil and jonquil. (b) Any crownlike appendage at the top of an organ.

7. (Meteorol.) (a) A circle, usually colored, seen in peculiar states of the atmosphere around and close to a luminous body, as the sun or moon. (b) A peculiar phase of the aurora borealis, formed by the concentration or convergence of luminous beams around the point in the heavens indicated by the direction of the dipping needle.

8. A crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also corona lucis. --Fairholt.

9. (Mus.) A character [[pause]] called the pause or hold.

corona 

Main Entry: co·ro·na
Pronunciation: k&-'rO-n&
Function: noun
: the upper portion of a bodily part (as a tooth or the skull)

corona co·ro·na (kə-rō'nə)
n. pl. co·ro·nas or co·ro·nae (-nē)
The crownlike upper portion of a body part or structure, such as the top of the head.

corona   (kə-rō'nə)  Pronunciation Key  Plural coronas or coronae (kə-rō'nē) 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. Also called aureole. 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.

Corona

city, Riverside county, southwestern California, U.S. Located about 45 miles (70 km) southeast of Los Angeles, Corona lies at the east end of the Santa Ana Canyon on the northeastern edge of the Santa Ana Mountains. Originally inhabited by Luiseno Indians, it became part of the Rancho La Sierra land grant. It was laid out as South Riverside when Queen Colony, a citrus growers' organization, was established (1886). In 1896 it was renamed Corona (Spanish: "Crown") for a 3-mile (5-km) circular drive that is now around the central city and was the site of international automobile races from 1913 to 1916. Largely known for its agricultural products, it was the site of the first lemon-processing plant (1915) in the United States and subsequently developed as a citrus-processing and shipping centre. Other crops include alfalfa, sugar beets, tomatoes, and walnuts. Light manufacturing, mining, and retail are economically important. A notable local attraction is the Fender Museum of Music and the Arts (opened 2002), which provides educational programming for children. Mathews Dam to the east impounds Lake Mathews. Cleveland National Forest, Chino Hills State Park, and Glen Ivy Hot Springs are nearby. Inc. 1896. Pop. (1990) 76,095; (2000) 124,966.

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