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"
corona -
a long cigar with blunt ends
corona -
one or more circles of light seen around a luminous object
corona -
the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
corona -
A crown or garland bestowed among the Romans as a reward for distinguished services.
corona -
The luminousplasmaatmosphere of the Sun or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.
corona -
A low energy discharge caused by ionization of a gas by an electric field, quite common at conductor bends of 12kV or higher.
Wikipedia
A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph. The Latin root of the word corona means crown.
OmegaWiki Dictionary
Ω
corona The part of the Sun's atmosphere located above the chromosphere and extending millions of kilometers into space.