: a region at the center of a galaxy that produces an extremely large amount of radiation
Examples of quasar in a Sentence
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The remainder are quasars, dominated by actively feeding supermassive black holes.
—
Big Think, 20 Oct. 2025
Many of those newfound objects were incredibly far away and therefore extremely luminous, but looked so much like stars that they were dubbed quasi-stellar radio sources, or quasars for short.
—Phil Plait, Scientific American, 16 Oct. 2025
Additionally, this quasar is also producing jets of particles moving at nearly the speed of light, a rare feature among quasars.
—Rupendra Brahambhatt, Interesting Engineering, 21 Sep. 2025
The brightness of quasars should make these supermassive black holes pretty conspicuous even at vast distances, and indeed, the team behind the new research used the Subaru Telescope to discover over 200 quasars.
—Robert Lea, Space.com, 11 Sep. 2025
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Big Think, 20 Oct. 2025
Many of those newfound objects were incredibly far away and therefore extremely luminous, but looked so much like stars that they were dubbed quasi-stellar radio sources, or quasars for short.
—Phil Plait, Scientific American, 16 Oct. 2025
Additionally, this quasar is also producing jets of particles moving at nearly the speed of light, a rare feature among quasars.
—Rupendra Brahambhatt, Interesting Engineering, 21 Sep. 2025
The brightness of quasars should make these supermassive black holes pretty conspicuous even at vast distances, and indeed, the team behind the new research used the Subaru Telescope to discover over 200 quasars.
—Robert Lea, Space.com, 11 Sep. 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 29 Oct. 2025.
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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
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