Definitions for Sirius
ˈsɪr i əssir·ius

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Sirius, Dog Star, Canicula, Sothisnoun

   the brightest star in the sky; in Canis Major

WiktionaryRate this definition:4.0 / 1 vote

1. Siriusnoun

   A bluish-white star in the constellation Canis Major; Alpha (u03B1) 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.

2. Etymology: From Sirius, from

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. SIRIUSnoun

   The dogstar.

   Etymology: Latin.

WikipediaRate this definition:0.0 / 0 votes

1. Sirius

   Sirius is the brightest star in the night sky. Its name is derived from the Greek word Σείριος, or Seirios, meaning lit. 'glowing' or 'scorching'. The star is designated α Canis Majoris, Latinized to Alpha Canis Majoris, and abbreviated Alpha CMa or α CMa. With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance between the two varies between 8.2 and 31.5 astronomical units as they orbit every 50 years.Sirius appears bright because of its intrinsic luminosity and its proximity to the Solar System. At a distance of 2.64 parsecs (8.6 ly), the Sirius system is one of Earth's nearest neighbours. Sirius is gradually moving closer to the Solar System, so it is expected to increase in brightness slightly over the next 60,000 years, reaching a peak magnitude of −1.68. After that time, its distance will begin to increase, and it will become fainter, but it will continue to be the brightest star in the Earth's night sky for approximately the next 210,000 years, before Vega, another A-type star and more luminous than Sirius, becomes the brightest star.Sirius A is about twice as massive as the Sun (M☉) and has an absolute visual magnitude of +1.43. It is 25 times as luminous as the Sun, but has a significantly lower luminosity than other bright stars such as Canopus, Betelgeuse, or Rigel. The system is between 200 and 300 million years old. It was originally composed of two bright bluish stars. The initially more massive of these, Sirius B, consumed its hydrogen fuel and became a red giant before shedding its outer layers and collapsing into its current state as a white dwarf around 120 million years ago.Sirius is colloquially known as the "Dog Star", reflecting its prominence in its constellation, Canis Major (the Greater Dog). The heliacal rising of Sirius marked the flooding of the Nile in Ancient Egypt and the "dog days" of summer for the ancient Greeks, while to the Polynesians, mostly in the Southern Hemisphere, the star marked winter and was an important reference for their navigation around the Pacific Ocean.

ChatGPTRate this definition:0.0 / 0 votes

1. sirius

   Sirius, also known as the Dog Star, is the brightest star in the Earth's night sky. It is located in the constellation Canis Major and is approximately 8.6 light-years away from Earth. Its name means "glowing" or "scorching" in Greek. Sirius is part of a binary star system and has a small, faint companion star, Sirius B.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Siriusnoun

   the Dog Star. See Dog Star

2. Etymology: [L., fr. Gr. , properly, scorching.]

FreebaseRate this definition:0.0 / 0 votes

1. Sirius

   Sirius is the brightest star in the night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The name "Sirius" is derived from the Ancient Greek: Σείριος Seirios. The star has the Bayer designation Alpha Canis Majoris. What the naked eye perceives as a single star is actually a binary star system, consisting of a white main-sequence star of spectral type A1V, termed Sirius A, and a faint white dwarf companion of spectral type DA2, called Sirius B. The distance separating Sirius A from its companion varies between 8.1 and 31.5 AU. Sirius appears bright because of both its intrinsic luminosity and its proximity to Earth. At a distance of 2.6 parsecs, as determined by the Hipparcos astrometry satellite, the Sirius system is one of Earth's near neighbors; for Northern-hemisphere observers between 30 degrees and 73 degrees of latitude, it is the closest star that can be seen with a naked eye. Sirius is gradually moving closer to the Solar System, so it will slightly increase in brightness over the next 60,000 years. After that time its distance will begin to recede, but it will continue to be the brightest star in the Earth's sky for the next 210,000 years.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Sirius

   sir′i-us, n. the Dogstar or Canicula, the brightest star in the heavens, situated in the constellation of Canis Major, or the Great Dog.—n. Sirī′asis, sunstroke. [L.,—Gr. seirios.]

The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Sirius

   or The Dog-Star, the brightest star in the heavens, one of the stars of the Southern constellation of Canis Major; is calculated to have a bulk three times that of the sun, and to give 70 times as much light. See Dog-Days.

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. sirius

   The principal star, α, of the constellation Canis Major, and the brightest in the heavens; the dog-star.

Matched Categories

1. • Binary Star

How to pronounce Sirius?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Sirius in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Sirius in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of Sirius in Pythagorean Numerology is: 5

Examples of Sirius in a Sentence

1. Robert Routh:

   I don't see more trackers created but do think a deal with Sirius XM as well as Expedia is likely in the works as well as a combination of Liberty Broadband Corp with Liberty Interactive in the future.

2. Henry Gradstein:

   Sirius XM treats every single owner of a pre-1972 song the same, namely it doesn't pay them, so it was appropriate for this court to grant class certification.

3. Jk Rowling:

   Sirius: It's cruel that I got to spend so much time with James and Lily, and you so little. But know this; the ones that love us never really leave us. Dumbledore:Numbing the pain for a while will make it worse when you finally feel it. Ginny:“The thing about growing up with Fred and George [...] is that you sort of start thinking anything's possible if you've got enough nerve.”

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