Deneb

noun

Den·​eb ˈde-ˌneb 

-nəb

: a star of the first magnitude in Cygnus

Examples of Deneb in a Sentence

Recent Examples on the Web

A matter of distance and brightness The stars that compose the Triangle — Vega, Altair, and Deneb — lie at very unequal distances from us, so their apparent brightness can give a misleading impression of their true luminosity. — Joe Rao, Space.com, 10 Sep. 2026

Start with Deneb, one of the most luminous stars known, then follow the line downward through the cross. — Jamie Carter, Forbes.com, 3 Aug. 2026

Powered by liquid oxygen and methane, Deneb has a thrust of 15,000 pounds. — Eric Berger, ArsTechnica, 9 July 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

Word History

Etymology

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

First Known Use

circa 1867, in the meaning defined above

Kids Definition

Deneb

noun

Den·​eb ˈden-ˌeb 

-əb

: the brightest star in the group of stars of Cygnus