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

(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 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]
References in periodicals archive ?
It is observed that corona discharge activity always occurs around the peak of the applied AC voltage.
Inhibitory Effect of Corona Discharge Air Plasma on the Spore Germination of Postharvest Pathogens.
A comparison of piezoelectric and dielectric properties based on corona and contact poling shows that the corona discharge polarization is more efficient than the contact poling method.
After the corona discharge, fractional and total collection efficiency in both cases practically does not depend on the flue gas Re number.
In the test laboratory, LAPEM, a prototype was developed for measurements (Figure 1), in which one could extract different types of DPs where the data will be free of noise, in order to get "clean" patterns in corona discharge, false contact, corona oil, and floating ground as well as internal and external PDs.
For the higher and the highest corona discharge generation voltage, the energy remains at the same level of approx.
The optophysic treatment is a technique that involves exposing the ABS surface sequentially to a corona discharge electrode of 20 kV and to UV rays from a 125 W mercury lamp (Fig.
When installing a new transmission line, an electrical engineer builds a multiphysics model to analyze electrical conductivity, protective coating requirements, corona discharge, pole structure stability, and other effects.
(2) Corona discharge: A phenomenon that occurs when the transmission line voltage is very high, whereby a partial breakdown of insulation occurs in the surrounding air, most commonly in the vicinity of the insulators that connect the transmission line to the tower.
System of DC corona discharge equations was used for modelling of the field:
"The pylons can cause corona discharge, stray voltage and construction noise in addition to wind-generated noise.