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[den-eb] /ˈdɛn ɛb/
noun, Astronomy.
a first-magnitude star in the constellation Cygnus.
Origin of Deneb
First recorded in 1865-70, Deneb is from the Arabic word dhanab a tail Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Deneb


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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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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
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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