: 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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Whenever the quasar brightened or dimmed, those changes showed up in the multiple images but with tiny delays.
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Rupendra Brahambhatt, Interesting Engineering, 7 Dec. 2025
Those same atoms, molecules, and/or ions absorb the light from behind them — whether from a quasar, a background galaxy, a star, or from the continuum — revealing those same characteristic quantum transitions.
—Big Think, 19 Nov. 2025
These results are in line with previous infrared observations of quasars, feeding supermassive black holes that glow brightly due to vast emissions of energy from material surrounding the black hole.
—Robert Lea, Space.com, 14 Nov. 2025
After the detection of hydrogen, astronomers discovered previously unknown types of stars, such as pulsars and quasars.
—Gabriela Radulescu, The Conversation, 4 Nov. 2025
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Rupendra Brahambhatt, Interesting Engineering, 7 Dec. 2025
Those same atoms, molecules, and/or ions absorb the light from behind them — whether from a quasar, a background galaxy, a star, or from the continuum — revealing those same characteristic quantum transitions.
—Big Think, 19 Nov. 2025
These results are in line with previous infrared observations of quasars, feeding supermassive black holes that glow brightly due to vast emissions of energy from material surrounding the black hole.
—Robert Lea, Space.com, 14 Nov. 2025
After the detection of hydrogen, astronomers discovered previously unknown types of stars, such as pulsars and quasars.
—Gabriela Radulescu, The Conversation, 4 Nov. 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 15 Dec. 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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