- the Swan, a northern constellation southwest of Draco, containing the bright star Deneb.
Origin of Cygnus
< Latin: swan; see cygnet
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cygnus
The temperature of Cygnus X-1 from Hawking radiation is roughly a billionth of a degree above absolute zero.Black Holes Exist. So Does Bad Science
Matthew R. Francis
September 28, 2014
Lower-mass black holes, such as Cygnus X-1, are the remnants of very massive stars; those are a story for another day.Black Hole Pair Caught in Feeding Frenzy
Matthew R. Francis
April 27, 2014
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.Lumen
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
- 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
Latin: swan; see cygnet
- 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.