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blue straggler

American  

noun

Astronomy.

  1. one of a small group of blue stars within a cluster that falls near the main sequence even though other stars of its color have evolved off the main sequence.

Etymology

Origin of blue straggler

First recorded in 1965–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It would be bluer than it should be and would be of a type known to astronomers as a “blue straggler”.

From Economist

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.