Meanings
- astronomyA bluish-white star in the constellation Canis Major; Alpha (α) Canis Majoris A. 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.
Synonyms: Alpha Majoris A, Al Shira, Blazing Star, Canicula, Sirius, Sirius A, α Majoris A
Synonyms & antonyms
proper nounA bluish-white star in the constellation Canis Major; Alpha (α) Canis Majoris A. 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.
Origin
From the fact that the star lies in the constellation of Canis Major (the "larger dog").
Full word history & related roots →Cite this entry
Dog Star. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Dog%20Star
“Dog Star.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Dog%20Star. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “Dog Star,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Dog%20Star.
Source: Dog Star on Wiktionary, CC BY-SA 4.0.