Deneb Definition
dĕnĕb
noun
A supergiant, variable star, the brightest star in the constellation Cygnus: magnitude, 1.25
Webster's New World
pronoun
(astronomy) A blue giant star in the constellation Cygnus; Alpha (α) Cygni. It forms one corner of the Summer Triangle. Deneb is one of the brightest stars in the night sky, and one of the most luminous stars known.
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