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corona
(redirected from Coronal Holes)

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
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.

co·ro·na (k-rn)
n. pl. co·ro·nas or co·ro·nae (-n)
The crownlike upper portion of a body part or structure, such as the top of the head.

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
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.


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These dark-appearing, open regions, known as coronal holes, permit solar wind to escape into space.
The tornadoes lie at the sun's poles--the same regions where darker, cooler parts of the atmosphere, known as coronal holes, are concentrated.
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.
 
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