: a region at the center of a galaxy that produces an extremely large amount of radiation
Examples of quasar in a Sentence
Recent Examples on the Web
Among its findings are the measurements of nearly 15 million galaxies and quasars, some of the brightest objects in the universe.
—
Ashley Strickland, CNN Money, 2 Apr. 2025
Radio quasars are the subclass of black holes that produce the most powerful energy and jets.
—David Garofalo, The Conversation, 31 Mar. 2025
Despite this, however, examining the innermost regions of distant quasars can be challenging to accomplish.
—Ron Estes, MSNBC Newsweek, 28 Mar. 2025
The observations also contain a small sample of quasars, the bright hearts of active galaxies powered by feeding supermassive black holes, which, because of their incredible luminosity, can be seen even further away.
—Robert Lea, Space.com, 19 Mar. 2025
See All Example Sentences for quasar
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Ashley Strickland, CNN Money, 2 Apr. 2025
Radio quasars are the subclass of black holes that produce the most powerful energy and jets.
—David Garofalo, The Conversation, 31 Mar. 2025
Despite this, however, examining the innermost regions of distant quasars can be challenging to accomplish.
—Ron Estes, MSNBC Newsweek, 28 Mar. 2025
The observations also contain a small sample of quasars, the bright hearts of active galaxies powered by feeding supermassive black holes, which, because of their incredible luminosity, can be seen even further away.
—Robert Lea, Space.com, 19 Mar. 2025
See All Example Sentences for quasar
Cite this Entry
“Quasar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quasar. Accessed 14 Apr. 2025.
Copy CitationKids Definition
quasar
noun
qua·sar
ˈkwā-ˌzär 
also -ˌsär
: any of the very distant starlike heavenly objects that give off very strong blue and ultraviolet light and powerful radio waves
Love words? Need even more definitions?
Merriam-Webster unabridged
Share