qua·​sar | \ ˈkwā-ˌzär How to pronounce quasar (audio) also -ˌsär \

Definition of quasar

: 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 discovery happened after scientists spotted an extremely bright quasar. Joshua Hawkins, BGR, 16 June 2022 That jet of particles is called a quasar; quasars with particle jets aimed directly at the Earth are extremely bright and are called blazars. Mike Snider, USA TODAY, 5 Mar. 2022 From the very beginning, the Compton quasar supplied L.A. with a distinct musical DNA. Abdi Ibrahim, Los Angeles Times, 15 Mar. 2022 That led them to look at the quasar's activity captured over decades from other radio telescopes across the world and NASA's Wide-field Infrared Survey Explorer (WISE) space satellite. Mike Snider, USA TODAY, 5 Mar. 2022 Nadathur’s work suggested that the cosmological principle has plenty of room for the quasar group, the Giant Arc and others of their ilk. Quanta Magazine, 13 Dec. 2021 The farthest galaxy — a special type of very bright galaxy with a gigantic black hole at its center, known as a quasar — is about 15 billion light-years from Earth. NBC News, 25 Aug. 2021 The supermassive black hole feeding this quasar is 300 million times more massive than our sun. Ashley Strickland, CNN, 8 Mar. 2021 Liu and her collaborators calculated that the quasar’s light fluctuates over a regular period of about 542 days, meaning that forthcoming data should soon either confirm or reject the pattern. Clara Moskowitz, Scientific American, 22 May 2015 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quasar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of quasar

1964, in the meaning defined above

History and Etymology for quasar


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Cite this Entry

“Quasar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quasar. Accessed 6 Oct. 2022.

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