[ 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 Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for deneb

British Dictionary definitions for deneb


/ (ˈdɛnɛb) /


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 for Deneb

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

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

Science definitions for deneb


[ dĕnĕb′ ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.