Deneb

noun

Den·​eb ˈde-ˌneb How to pronounce Deneb (audio)
-nəb
: a star of the first magnitude in Cygnus

Examples of Deneb in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
To make it into a swan, make Deneb the tail of the Swan and the star Albireo at the foot of the cross the head of the big heavenly bird. Mike Lynch, Twin Cities, 7 June 2026 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 The North American Nebula shines to the lower left of Deneb, named for its resemblance to the North American continent, while the 120-light-year-wide supernova remnant known as the Cygnus Loop glows closer to the horizon. Anthony Wood, Space.com, 11 May 2026 The collected brightness of billions of stars, the Milky Way streams between Deneb and Altair, and then down to the horizon in the south. Jamie Carter, Forbes.com, 29 Aug. 2025 The triangle’s vertices are formed by the stars Deneb, Vega, and Altair, forming a celestial isosceles triangle that’d make Euclid proud, that spans the constellations Cygnus, Lyra, and Aquila. Tom Hawking, Popular Science, 31 July 2025

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 8 Jun. 2026.

Kids Definition

Deneb

noun
Den·​eb ˈden-ˌeb How to pronounce Deneb (audio)
-əb
: the brightest star in the group of stars of Cygnus

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