[sig-nuh s]

noun, genitive Cyg·ni [sig-nahy] /ˈsɪg naɪ/. Astronomy.

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 Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cygnus

Contemporary Examples of cygnus

Historical Examples of cygnus

  • At midnight Scorpius and Cygnus are ready to claim the attention.

    A Field Book of the Stars

    William Tyler Olcott

  • "Sure, Cygnus," he muttered, and closed his eyes and dropped off to sleep.

    Master of None

    Lloyd Neil Goble

  • Cygnus, who was a poet, celebrated the death of his friend in verse, from whence the fable.

    The Lusiad

    Lus de Cames

  • I was looking at that ring in the constellation of Cygnus, being drawn there with persistence by some irresistible instinct.


    Camille Flammarion

  • 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

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 for Cygnus

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

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