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Deneb

[den-eb] /ˈdɛn ɛb/
noun, Astronomy
1.
a first-magnitude star in the constellation Cygnus.
Origin
1865-1870
1865-70; < Arabic dhanab a tail
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Deneb

Deneb

/ˈdɛnɛb/
noun
1.
the brightest star in the constellation Cygnus and one of the brightest but remotest stars in the night sky. Visual magnitude: 1.25; spectral type: A2I
Word Origin
C19: from Arabic dhanab a tail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for Deneb

1867, bright star in the tail of the constellation Cygnus the Swan, from Arabic Al Dhanab al Dajajah "the Hen's Tail."

Online Etymology Dictionary, © 2010 Douglas Harper
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Deneb in Science
Deneb
  (děn'ěb')   
A white supergiant star. It is the brightest star in the constellation Cygnus, with an apparent magnitude of 1.26. Deneb, along with Vega and Altair, form the Summer Triangle asterism. Scientific name: Alpha Cygnus. See Note at Rigel.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for Deneb

one of the brightest stars, with an apparent magnitude of 1.25. This star, at about 3,200 light-years' distance, is the most remote (and brightest intrinsically) of the 20 apparently brightest stars. It lies in the northern constellation Cygnus

Learn more about Deneb with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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