Dog Star Definition

noun
Webster's New World
Webster's New World
Synonyms:
pronoun

(astronomy) A bluish-white star in the constellation Canis Major; Alpha (α) Canis Majoris. A vertex of the Winter Triangle and the brightest star in the night sky. It is actually a binary star with a white dwarf companion star.

Wiktionary

Origin of Dog Star

  • From the fact that the star lies in the constellation of Canis Major (the "larger dog")

    From Wiktionary

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Dog Star