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blue stellar object

American  

noun

Astronomy.

  1. any of a class of blue celestial objects, at one time thought to be stars, that do not emit appreciable radio waves. BSO

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.