Nearby Words
Sirius Official Store shop.sirius.com/ Save $20-$50 on Sirius Radios With a 3 Month Subscription!
Sirius Satellite Radio www.zrostores.com/SatelliteRadio Buy XM & Sirius Satellite Radios Save up to 40% off retail prices!
Get The Dictionary.com Mobile App! www.dictionary.com/mobile Enjoy Exclusive Features like Voice Search! iPhone, Android, iPad, BlackBerry, Windows & More. Download Now!
Ads
noun
1.
Astronomy. the Dog Star, the brightest-appearing star in the heavens, located in the constellation Canis Major.
2.
Also, Seirios. Classical Mythology.
a.
the dog of Orion.
b.
Icarius' faithful dog, who was changed into a star.
Origin:
1325–75; Middle English < Latin Sīrius < Greek Seírios
1325–75; Middle English < Latin Sīrius < Greek Seírios
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
|
Link To Sirius
00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
Sirius
is always a great word to know.
So is absolute magnitude. Does it mean:
| either of the two times a year when the sun is at its greatest distance from the celestial equator that takes place about June 21 and about December 22 |
| the magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
Sirius
brightest star, late 14c., from Gk. Seirios, lit. "scorching." Probably so called from its ancient heliacal rising at the summer solstice (see dog days). An Egyptian name for it was Sothis.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Cite This Source
American Heritage
Science Dictionary
Sirius  (sĭr'ē-əs) Pronunciation Key
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. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Word Dynamo Rating For Sirius
Image for Sirius
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
