corona

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co·ro·na

 (kə-rō′nə)
n. pl. co·ro·nas or co·ro·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.

[Latin corōna; see crown.]

corona

(kəˈrəʊnə)
n, pl -nas or -nae (-niː)
1. (Astronomy) a circle of light around a luminous body, usually the moon
2. (Astronomy) Also called: aureole the outermost region of the sun's atmosphere, visible as a faint halo during a solar eclipse
3. (Architecture) architect the flat vertical face of a cornice just above the soffit
4. something resembling a corona or halo
5. (Architecture) a circular chandelier suspended from the roof of a church
6. (Botany) botany
a. the trumpet-shaped part of the corolla of daffodils and similar plants; the crown
b. a crown of leafy outgrowths from inside the petals of some flowers
7. (Anatomy) anatomy a crownlike structure, such as the top of the head
8. (Zoology) zoology the head or upper surface of an animal, such as the body of an echinoid or the disc and arms of a crinoid
9. (Recreational Drugs) a long cigar with blunt ends
10. (General Physics) physics short for corona discharge
[C16: from Latin: crown, from Greek korōnē anything curved; related to Greek korōnis wreath, korax crow, Latin curvus curved]

co•ro•na

(kəˈroʊ nə)

n., pl. -nas, -nae (-nē).
1.
a. a white or colored circle or set of concentric circles of light seen around a luminous body, esp. around the sun or moon.
b. a similar colored circle or set of circles visible in the atmosphere and attributable to the diffraction caused by thin clouds, mist, or sometimes dust (disting. from halo).
2. a diffuse, hot envelope of ionized gas surrounding the sun that is visible during total solar eclipse.
3. a long, straight, untapered cigar, rounded at the closed end.
4. a crownlike appendage on a plant, esp. on the inner side of a corolla, as in the narcissus.
5. the upper portion or crown of a part, as of the head.
7. the projecting slablike member of a classical cornice, supported by the bed molding or by modillions, dentils, etc., and surmounted by the cymatium.
8. a metal chandelier having the form of one or more concentric hoops, used esp. in churches.
[1555–65; < Latin corōna garland, crown< Greek korṓnē crown, curved object; akin to korōnís curved, beaked, kórax crow1, raven]

Co•ro•na

(kəˈroʊ nə)

n.
a city in SE California. 100,208.

co·ro·na

(kə-rō′nə)
1. The irregular envelope of gas outside the chromosphere of a star, especially the sun.
2. A faintly colored shining ring appearing around a celestial body, especially the moon or sun, when seen through a haze or thin cloud.
3. A crown-shaped structure on the inner side of the petals of some flowers, such as the daffodil.

corona

The Sun’s gaseous outer layer that emits solar wind and is visible as a halo during a total solar eclipse.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.corona - the outermost region of the sun's atmospherecorona - the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
nimbus, nimbus cloud, rain cloud - a dark grey cloud bearing rain
glowing, radiance, glow - the amount of electromagnetic radiation leaving or arriving at a point on a surface
2.corona - (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
phytology, botany - the branch of biology that studies plants
corolla - (botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth; "we cultivate the flower for its corolla"
plant part, plant structure - any part of a plant or fungus
3.corona - an electrical discharge accompanied by ionization of surrounding atmospherecorona - an electrical discharge accompanied by ionization of surrounding atmosphere
arc, electric arc, electric discharge, spark, discharge - electrical conduction through a gas in an applied electric field
4.corona - one or more circles of light seen around a luminous object
light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"
5.corona - (anatomy) any structure that resembles a crown in shape
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
anatomy, general anatomy - the branch of morphology that deals with the structure of animals
6.corona - a long cigar with blunt ends
cigar - a roll of tobacco for smoking
Translations
corona

corona

[kəˈrəʊnə] N (coronas or coronae (pl)) [kəˈrəʊniː] (Anat, Astron) → corona f (Elec) → descarga f de corona (Archit) → corona f, alero m

corona

n (Astron, of sun, moon etc) → Hof m; (= part of sun’s atmosphere)Korona f; (of tooth)Krone f; (Bot) → Nebenkrone f; (= cigar)Corona f
References in periodicals archive ?
There was an association between higher cortisol level and multiple areas of microstructural changes (decreased regional fractional anisotropy), especially in the splenium of corpus callosum and the posterior corona radiata. There was variance by sex for the association of cortisol level with total cerebral brain volume (P for interaction = 0.048).
Briefly, a score of 0 indicates no detectable response; score 1 indicates no cumulus cell expansion but cells appear as spherical; score 2 indicates only the outermost layers of cumulus cells expanded; score 3 indicates all cell layers have expanded except the corona radiata; and score 4 indicates expansion has occurred in all cell layers including the corona radiate.
However, many lesion sites other than pons, including the internal capsule, corona radiata, and thalamus, have also been described as a cause of this clinical picture (3).
MRI brain illustrated rim-enhancing lesions with diffusion restriction in the right peritrigonal and left corona radiata (Figure 1) while orbital sections showed circumferential smooth enhancement in the left globe and optic nerve sheath (Figures 2 and 3).
Brain CT scan showed a hypodensity in the left corona radiata. Angiographic sequences found a left M2 segment subocclusive stenosis.
On the third day in the hospital, magnetic resonance imaging (MRI) of the head showed high signal intensity on DW image and well-defined rounded cystic lesion on the T2-weighted and T1-weighted images involving in the right corona radiata and basal ganglia (Figure 3), although the lesion looks like that of an acute stroke but lately was confirmed to be early stage of cerebral abscess.
These regions were the posterior medial portion of the corona radiata (n = 2), medial medulla (n = 1), centrum semiovale (n = 1), internal border zone (n = 1), and the rostral anterolateral pons (n = 1) (Figure 1).
The main findings of the MRI were hypointensity on T1-weighted images and hyperintensity on T2-weighted images of the bilateral frontal lobe, bilateral parietal lobe, basal ganglia and corona radiata, indicating cerebral ischaemia, lacunar infarction, and cerebral atrophy.
Multiple focal areas of hyperintensity on T2W1/FLAIR are seen in the periventricular white matter, subcortical white matter, centrum semiovale and corona radiata which are hypointense on T1W1 not showing restriction of diffusion most likely suggestive of old white-matter ischaemic changes.
Five of the nine patients had abnormal multiple scattered long T1 and T2 signals in the bilateral corona radiata and centrum semiovale and four had abnormal multiple stippled long T1 and T2 signals in the bilateral basal ganglia and centrum semiovale.
Semi-quantitative scoring method was employed to evaluate Gal-1 and Gal-3 immunolocalization in many parts of diabetic rat ovary, such as epithelium, tunica albuginea, cortex, cortical blood vessels, medulla, fibroblast-like cells, primordial follicles, primordial follicle cells, primary oocytes, primary follicle, primary follicle cells, zona pellucida, theca interna, theca externa, secondary follicles, granulosa cells, antrum, corona radiata and culumus (Tables I and II).