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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.


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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Sirius Scientific  
/ sĭrē-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.


Etymology

Origin of Sirius

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From Los Angeles Times

"American presidents come and go, but the Sirius patrol will remain. This is because it is the most effective way of doing things," he said.

From Barron's

He is instead fashioning himself after cable pioneer John Malone, who built a stable of connectivity and sports assets including Formula One, Sirius XM and Live Nation.

From The Wall Street Journal

The Sirius patrol, tasked with defending a huge, largely uninhabited swathe of the island in the northeast measuring 972,000 square km, travels across the ice by dogsled.

From Barron's

Large swathes of it are policed only by Sirius Patrol, a Danish special operations unit that relies primarily on dog sleds.

From BBC