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Definition of Subhelic arc
1. Noun. A rare halo, formed by internal reflection through ice crystals, that curves upwards from the horizon and touches the tricker arc above the anthelic point. ¹
¹ Source: wiktionary.com
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1. Noun. A rare halo, formed by internal reflection through ice crystals, that curves upwards from the horizon and touches the tricker arc above the anthelic point. ¹
¹ Source: wiktionary.com