sun dog

noun

Definition of sun dog 

1 : parhelion

2 : a small nearly round halo on the parhelic circle most frequently just outside the halo of 22 degrees

Examples of sun dog in a Sentence

Recent Examples on the Web

But this picture also holds another interesting effect: sun dogs. Mika Mckinnon, Smithsonian, "How the Antarctic Sun Creates Breathtaking Optical Effects," 5 Feb. 2018 When sun dogs are present due to high cirrus clouds, they can actually be used as a forecast tool. Kathryn Prociv, Washington Post, "Pic of the Week: Brilliant sun dog shines over the Mountain State," 23 Feb. 2018 Similar to sun dogs, lunar and solar halos belong to the family of ice halos, which are optical phenomena formed by the refraction of sun on hexagonal ice crystals suspended high up in the atmosphere, most commonly in cirrus clouds. Kathryn Prociv, Washington Post, "Skywatchers in Chile were star-struck by this incredible lunar halo," 13 Apr. 2018 Another arc of light swoops through the center of the image, crossing the sun and sun dogs. Mika Mckinnon, Smithsonian, "How the Antarctic Sun Creates Breathtaking Optical Effects," 5 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sun dog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sun dog

1635, in the meaning defined at sense 1

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The first known use of sun dog was in 1635

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