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[sig-nuh s] /ˈsɪg nəs/
noun, genitive Cygni
[sig-nahy] /ˈsɪg naɪ/ (Show IPA).
the Swan, a northern constellation southwest of Draco, containing the bright star Deneb.
Origin of Cygnus
< Latin: swan; see cygnet Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for Cygnus
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Historical Examples
  • Near Vega is another important constellation, known as the Swan or Cygnus.

    The Story of the Heavens Robert Stawell Ball
  • Cygnus, who was a poet, celebrated the death of his friend in verse, from whence the fable.

    The Lusiad Lus de Cames
  • McGuire is taking us straight toward Cygnus at two gees and won't stop.

    A Spaceship Named McGuire Gordon Randall Garrett
  • I was looking at that ring in the constellation of Cygnus, being drawn there with persistence by some irresistible instinct.

    Lumen Camille Flammarion
  • He told her that the Milky Way was at its best these coming months, and that Cygnus would be always visible on clear nights.

    The Wave Algernon Blackwood
  • In 1876 a temporary star appeared in the constellation Cygnus, and attained at one time the brightness of the second magnitude.

    Curiosities of the Sky Garrett Serviss
  • Circles of four degrees radius include respectively seven in Argo, eight in Cygnus.

  • The central nucleus he locates in the rich Galactic region of Cygnus, with the sun well outside the nucleus itself.

    Astronomy David Todd
British Dictionary definitions for Cygnus


noun (Latin genitive) Cygni (ˈsɪɡnaɪ)
a constellation in the N hemisphere lying between Pegasus and Draco in the Milky Way. The constellation contains the Cygnus Loop supernova remnant, the intense radio galaxy Cygnus A, and the intense galactic X-ray source Cygnus X–1, which is probably a black hole
Word Origin
Latin: swan; see cygnet
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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Cygnus in Science
A constellation in the Northern Hemisphere near Cepheus and Lyra. Cygnus (the Swan, or the Northern Cross) contains the bright star Deneb.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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