: a usually colored circle often seen around and close to a luminous body (such as the sun or moon) caused by diffraction produced by suspended droplets or occasionally particles of dust
(2)
: the tenuous outermost part of the atmosphere of a star (such as the sun)
(3)
: a circle of light made by the apparent convergence of the streamers of the aurora borealis
b
: the upper portion of a bodily part (such as a tooth or the skull)
c
: an appendage or series of united appendages on the inner side of the corolla in some flowers (such as the daffodil, jonquil, or milkweed)
d
: a faint glow adjacent to the surface of an electrical conductor at high voltage
In the fight against the consequences of the corona epidemic, the Italian government is resorting to radical measures.—Anne Kunz et al.
3
[from La Corona, a trademark]: a long cigar having the sides straight to the end to be lit and being roundly blunt at the other end
Illustration of corona
a corona 2c
Examples of corona in a Sentence
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Yes, there could be clouds on the horizon, as seen from the west coasts of these popular vacation islands, but a rare golden corona is the prize.—Jamie Carter, Space.com, 4 July 2025 The hope is that the data collected will be of immense help in understanding the solar wind, solar flares, and temperature variations within the corona.—David Szondy
june 28, New Atlas, 28 June 2025 Because of their curious ability to transmute into photons in the presence of strong magnetic fields, any place that features strong fields—think neutron stars or even the solar corona—could produce extra radiation due to axions.—ArsTechnica, 25 June 2025 The presence of a corona typically indicates a spot on the surface where hot material from the planet’s mantle rises.—Stephanie Edwards, Discover Magazine, 14 May 2025 See All Example Sentences for corona
Word History
Etymology
borrowed from Latin corōna "garland worn on the head as a mark of honor or emblem of majesty, halo around a celestial body, top part of an entablature" — more at crown entry 1
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