Sirius

American  

[sir-ee-uhs] / ˈsɪr i əs /

noun

1. Astronomy. the Dog Star, the brightest-appearing star in the heavens, located in the constellation Canis Major.

2. Classical Mythology. Also Sirius

   1. the dog of Orion.

   2. Icarius' faithful dog, who was changed into a star.

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Sirius British  

/ ˈsɪrɪəs /

noun

1. Also called: the Dog Star, Canicula, Sothis. the brightest star in the sky after the sun, lying in the constellation Canis Major. It is a binary star whose companion, Sirius B , is a very faint white dwarf. Distance: 8.6 light years

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Sirius Scientific  

/ sĭr′ē-əs /

1. The brightest star seen in the night sky. It is in the constellation Canis Major. It is a white main-sequence star on the Hertzsprung-Russell diagram, with an apparent magnitude of −1.5. Sirius is a binary star, and its companion is a white dwarf star referred to as the Pup. Sirius is also known as the Dog Star. Scientific name: Alpha Canis.

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Etymology

Origin of Sirius

1325–75; Middle English < Latin Sīrius < Greek Seírios

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Example Sentences

See Examples For:

Sirius

He wrote 22 books, countless liner notes, and hosted three radio shows on Sirius XM: “Live from E Street Nation,” “Live from the Land of Hopes and Dreams,” and “Kick Out The Jams.”

From Salon ● Sep. 8, 2026

Sirius Academy West in Hull has hosted its first uniform approval day of the summer so children's trousers and skirts could be checked.

From BBC ● Aug. 4, 2026

He used the giant telescope to capture the twinkling of Sirius, the brightest star in the night sky.

From Los Angeles Times ● Feb. 17, 2026

Around 80 to 100 people apply to join the Sirius patrol each year, with the only prerequisite being completion of Denmark's basic military training.

From Barron's ● Jan. 28, 2026

“Don’t know what you mean, Sirius —” muttered Pettigrew, his breathing faster than ever.

From "Harry Potter And The Prisoner Of Azkaban" by J.K. Rowling

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