blue giant

noun

Definition of blue giant

astronomy

: a bluish star that has a high surface temperature and a diameter that is large relative to the sun Later, just a few thousand years before the supernova explosion, the red giant apparently lost some of its girth, forming a blue giant, which emits a faster, lower density wind.— Ron Cowen, Science News, 6 Mar. 1993

Note: Blue giant is not a technical term and can be applied to a number of different types of stars, as long as they are large and hot enough to appear blue in the night sky.

— compare red giant

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The first known use of blue giant was in 1922

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