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The luminous plasma atmosphere of the Sun or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.
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A circle or set of circles visible around a bright celestial object, especially the Sun or the Moon, attributable to an optical phenomenon produced by the diffraction of its light by small water droplets or tiny ice crystals.
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(by extension) Any luminous or crownlike ring around an object or person.
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A luminous appearance caused by corona discharge, often seen as a bluish glow in the air adjacent to pointed metal conductors carrying high voltages.
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The large, flat, projecting member of a cornice which crowns the entablature, situated above the bed moulding and below the cymatium.
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A large, round pendent chandelier, with spikes around its upper rim to hold candles or lamps, usually hung from the roof of a church.
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A crown or garland bestowed among the Romans as a reward for distinguished services.
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Any appendage of an organism that resembles a crown or corona.
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An upper or crownlike portion of certain parts of the body.
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A manifestation of secondary syphilis, consisting of papular lesions along the hairline, often bordering the scalp in the manner of a crown.
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An oval-shaped astrogeological feature, present on both the planet Venus and Uranus's moon Miranda, probably formed by upwellings of warm material below the surface.
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A mineral zone, consisting of one or more minerals, which surrounds another mineral or lies at the interface of two minerals, typically in a radial arrangement; a reaction rim.