corona

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corona

 [kŏ-ro´nah] (pl. coro´nae, coronas) (L.)
crown; in anatomic nomenclature, an eminence or encircling structure that resembles a crown. adj., adj cor´onal.
corona radia´ta
1. the radiating crown of projection fibers passing from the internal capsule to every part of the cerebral cortex.
2. an investing layer of radially elongated follicle cells surrounding the zona pellucida of the ovum; it accompanies the oocyte during ovulation.

crown

(krown), [TA]
1. Any structure, normal or pathologic, resembling or suggesting a crown or a wreath.
2. In dentistry, that part of a tooth that is covered with enamel. Synonym(s): corona [TA]
3. An artificial substitute for the part of a tooth that is normally covered with enamel.
[L. corona]

corona

/co·ro·na/ (kŏ-ro´nah) pl. coro´nae, coronas   [L.] a crown; in anatomical nomenclature, a crownlike eminence or encircling structure.cor´onal
corona glan´dis pe´nis  the rounded proximal border of the glans penis.
corona radia´ta 
1. the radiating crown of projection fibers passing from the internal capsule to every part of the cerebral cortex.
2. an investing layer of radially elongated follicle cells surrounding the zona pellucida.
corona ve´neris  a ring of syphilitic sores around the forehead.

corona

(kə-rō′nə)
n. pl. coro·nas or coro·nae (-nē)
1. 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.
2. Architecture An overhanging part near the top of a classical cornice, having a flat outer face.
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 a daffodil. 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.

corona

[kərō′nə]
Etymology: L, crown
1 a crown.
2 a crownlike projection or encircling structure, such as a process extending from a bone. coronal, coronoid, adj.

corona of penis

A ridge of skin separating the penis head from the shaft, which corresponds to the “trailing” edge of the head.

crown

(krown)
1. Any structure, normal or pathologic, resembling or suggesting a crown or a wreath.
2. dentistry That part of a tooth that is covered with enamel, or an artificial substitute for that part.
Synonym(s): corona [TA] .
[L. corona]

corona

Any structure resembling a crown.

corona

a trumpet-shaped outgrowth of the PERIANTH, as in daffodil flowers.

crown

(krown)
1. [TA] In dentistry, that part of a tooth that is covered with enamel.
2. An artificial substitute for the part of a tooth that is normally covered with enamel.
[L. corona]

Corona

a type of canary, which can be any breed; distinguished by a cap of feathers like an inverted saucer or a Beatles haircut. Called also Crested.

corona

pl. coronae [L.] a crown; a crownlike eminence or encircling structure.

glans corona
the prominent, denticulated margin of the glans penis in the stallion.
corona radiata
1. the radiating crown of projection fibers passing from the internal capsule to every part of the cerebral cortex.
2. an investing layer of radially elongated follicle cells surrounding the zona pellucida of the ovum.
References in periodicals archive ?
This is consistent with the fast wind originating from cooler coronal holes, and the plasma streaming straight out without time for FIP fractionation.
Coronal holes become visible at random locations throughout the Sun, indicating the reorientation of hydrogen planes in the interior.
During solar max, the magnetic fields on the sun reverse and new coronal holes appear near the poles with the opposite magnetic alignment.
2011) Evolution of coronal holes and implications for high-speed solar wind during the minimum between cycles 23 and 24.
Hahn's team also calculated that the energy dissipated could provide up to 70% of that needed to heat the polar coronal hole and accelerate the fast solar wind.
The quiet sun and coronal holes are punctuated by small X-ray bright points, which are always associated with simple magnetic bipoles in the photosphere and dark ephemeral regions in the chromosphere.
The coronal cells occur in areas between coronal holes - colder and less dense areas of the corona seen as dark regions in images and "filament channels" which mark the boundaries between sections of upward-pointing magnetic fields and downward-pointing ones.
This was caused by southerly Bz vectors, sometimes assisted by coronal holes, which allowed the solar wind stream access to the inner magnetosphere.
Observations from the Ultraviolet Coronagraph Spectrometer (UVCS) experiment on SOHO are among those indicating that fast waves heat at least coronal holes and contribute to the acceleration of the solar wind.
Right now, most of the solar wind is coming from coronal holes, or openings in the sun's magnetic field, but later in the year, the scientists expect coronal mass ejections (SN: 2/1/97, p.
During the decline of the sunspot cycle coronal holes develop and extend to the Sun's equatorial regions.
s sunspots became less common over the last few years, large coronal holes lingered in the surface of the Sun near its equator.