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Noun: solar halo  'sow-lur 'hey-low
  1. A luminous halo parallel to the horizon at the altitude of the sun; caused by ice crystals in the atmosphere
    - parhelic circle, parhelic ring

Derived forms: solar haloes

Type of: halo

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solar cell
solar collector
solar constant
solar day
solar dish
solar eclipse
solar energy
solar flare
solar furnace
solar gravity
solar halo
solar heater
solar house
solar magnetic field
solar month
solar panel
solar parallax
solar physics
solar plexus
solar power
solar prominence