red giant

noun

: a star that has low surface temperature and a diameter that is large relative to the sun

Examples of red giant in a Sentence

Recent Examples on the Web

Antares is, in reality, a binary star system, made up of a red supergiant star with a white main sequence companion, though the light of the red giant dominates the naked-eye view from Earth. —Anthony Wood, Space.com, 29 Aug. 2025

Webb’s data revealed an object, named NIR-1, which could be a massive star or a red giant — a sun-like star at the end of its life that has brightened significantly. —Ashley Strickland, CNN Money, 26 Aug. 2025

The most obvious shape is Orion’s Belt — three stars (Alnitak, Alnilam and Mintaka) in a straight line —with red giant Betelgeuse roughly between the belt stars and Jupiter. —Jamie Carter, Forbes.com, 17 Aug. 2025

Antares, a red giant star, is the brightest star in Scorpius and marks the heart of the beast. —Mike Lynch, Twin Cities, 3 Aug. 2025

Word History

First Known Use

1929, in the meaning defined above

Rhymes for red giant

• client
• pliant
• scient
• compliant
• defiant
• reliant
• suppliant
• noncompliant
• supergiant

Kids Definition

red giant

noun

: a very large star with a relatively low surface temperature