[ den-eb ]

  1. 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

Words Nearby Deneb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Deneb in a sentence

  • Above him was the enormous triangle formed by Deneb, Vega, and Altair.

  • Bart's mother had been a Mentorian—from the planet Mentor, of the star Deneb, a hundred times brighter than the sun.

    The Colors of Space | Marion Zimmer Bradley
  • Earth is over-crowded and Deneb is under-populated, so of course our methods would be the opposite of Earth's.

    No Charge for Alterations | Horace Leonard Gold
  • A bit arbitrary, perhaps, but for the good of Dr. Hoyt and Deneb in the long run, just as it had been for himself.

    No Charge for Alterations | Horace Leonard Gold
  • They'd originally been found on a planet in the Deneb area, and they were engaging and friendly small animals.

    This World Is Taboo | Murray Leinster

British Dictionary definitions for Deneb


/ (ˈdɛnɛb) /

  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

Origin of 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

Scientific definitions for Deneb


[ dĕnĕb′ ]

  1. 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.