: a star of the first magnitude in Cygnus

Examples of Deneb in a Sentence

Recent Examples on the Web
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Three stars — Deneb, Vega and Altair — will form a triangle, known as the Summer Triangle asterism. Hali Smith june 4, Idaho Statesman, 4 June 2026 Three stars — Deneb, Vega and Altair — will form a triangle, known as the Summer Triangle asterism. Alexiah Syrai Olsen, Sacbee.com, 31 May 2026 Vega in Lyra the Lyre or Harp; Altair in Aquila the Eagle; and Deneb, the brightest star in Cygnus the Swan. Mike Lynch, Twin Cities, 5 July 2026 Altair can be found shining a little over 30 degrees above the silver glow of the lunar disk, with Vega and Deneb to its upper left, marking the brightest points in the constellations of Lyra and Cygnus, respectively. Anthony Wood, Space.com, 2 July 2026 See All Example Sentences for Deneb

Word History

Etymology

Arabic dhanab al-dajāja, literally, the tail of the hen

First Known Use

circa 1867, in the meaning defined above

Time Traveler
The first known use of Deneb was circa 1867

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Cite this Entry

“Deneb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Deneb. Accessed 10 Jul. 2026.

Kids Definition

: the brightest star in the group of stars of Cygnus

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