: 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
The best example of the heights such precision can reach may be Gaia’s tour de force determination of the solar system’s acceleration with respect to a vast, sky-encompassing field of quasars.
—
Lee Billings, Scientific American, 18 June 2025
The leading candidates included massive galaxies, quasars powered by black holes, and small, low-mass galaxies.
—Sharmila Kuthunur, Space.com, 19 June 2025
As such, quasars are among the most powerful beacons astronomers can use to probe distant regions of the universe.
—Lee Billings, Scientific American, 18 June 2025
Related article Largest celestial object of its kind discovered in the distant universe
Highly dynamic, luminous quasars are rare, according to NASA.
—Kameryn Griesser, CNN Money, 23 May 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.
Lee Billings, Scientific American, 18 June 2025
The leading candidates included massive galaxies, quasars powered by black holes, and small, low-mass galaxies.
—Sharmila Kuthunur, Space.com, 19 June 2025
As such, quasars are among the most powerful beacons astronomers can use to probe distant regions of the universe.
—Lee Billings, Scientific American, 18 June 2025
Related article Largest celestial object of its kind discovered in the distant universe
Highly dynamic, luminous quasars are rare, according to NASA.
—Kameryn Griesser, CNN Money, 23 May 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 12 Jul. 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