halo

中文： 圆光、晕

1. A circular band of coloured light, visible around the sun or moon etc., caused by reflection and refraction of light by ice crystals in the atmosphere.
2. A cloud of gas and other matter surrounding and captured by the gravitational field of a large diffuse astronomical object, such as a galaxy or cluster of galaxies.
3. Anything resembling this band, such as an effect caused by imperfect developing of photographs.
4. nimbus, a luminous disc, often of gold, around or over the heads of saints, etc., in religious paintings.
5. The metaphorical aura of glory, veneration or sentiment which surrounds an idealized entity. · her halo slipped
6. The bias caused by the halo effect.
7. a circular annulus ring, frequently luminous, often golden, floating above the head
8. A circular brace used to keep the head and neck in position.

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