noun, genitive Cyg·ni [sig-nahy]. /ˈsɪg naɪ/. Astronomy.
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Origin of Cygnus
Words nearby Cygnus
Example sentences from the Web for Cygnus
The temperature of Cygnus X-1 from Hawking radiation is roughly a billionth of a degree above absolute zero.
Lower-mass black holes, such as Cygnus X-1, are the remnants of very massive stars; those are a story for another day.
In the year 1670 a new star appeared in the constellation Cygnus, attaining the third magnitude.Myths and Marvels of Astronomy|Richard A. Proctor
I recollect but one philosopher styled Cygnus; and, what is remarkable, he was of Canaan.
A gigantic swan, Cygnus falconeri, is known from the Zebug cavern in Malta.
Considering it an undescribed species, it was named Cygnus anatodoides.
Near Vega is another important constellation, known as the Swan or Cygnus.The Story of the Heavens|Robert Stawell Ball