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A.Word.A.Day--sundog

sundog (SUN-dog) noun

1. A parhelion (a bright spot sometimes appearing on either side of the sun, often on a luminous ring or halo)

2. A small halo or rainbow near the horizon just off the parhelic circle.

"I still remember a lecture on sundogs when I was a graduate student and the vivid demonstration on how the hexagonal ice crystals cause these images." W. Dean Pesnell, The Prodigal Sun, Mercury, Jan/Feb 1998.

This week's theme: red-herring words.

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