Any of various other luminous atmospheric phenomena manifesting as arcs or rings but lacking (or appearing to lack) the full spectrum of colours. Cf…

A circle or halo of light seen around the sun, the moon, a shadow, etc.; a corona (corona, n.1 1). Now rare.

An early form of crown, n., frequent in 14–15th centuries, but obsolete by 1500. In the following, apparently a new formation from Latin corona: see c…

A small circle or disc of light (usually prismatically coloured) appearing round the sun or moon. Also applied to a similar appearance opposite…

A faint luminous halo, spot, arc, or arrangement of arcs occurring opposite the sun on the parhelic circle. Cf. parhelion, n. 1.

an arc or ring of white or weakly coloured light, regarded as being similar in form to a rainbow, caused by light shining through fog.

transferred. Any circle or ring of light; a halo, corona. Also, †a name for the star of an order of knighthood (obsolete), and spec. an anthelion…