Definition of quasar
: a region at the center of a galaxy that produces an extremely large amount of radiation
Recent Examples of quasar from the Web
What caught Chiaberge’s eye was the quasar’s location, 35,000 light-years from the center of its galaxy.
Blazars are a type of quasar, a form of proto-galaxy found in the early universe.
The final survey will contain 250,000 new solar system objects, a million distant galaxies, 500,000 quasars—and about 20,000 exoplanets, says Gaia lead project scientist Timo Prusti.
Among the brightest objects in the sky, quasars are short-lived phenomena that only existed during the earliest eras of the universe.
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.
Origin and Etymology of quasar
First Known Use: 1964See Words from the same year
QUASAR Defined for English Language Learners
Definition of quasar for English Language Learners
astronomy : a very bright object in space that is similar to a star and that is very far away from the Earth and gives off powerful radio waves
Seen and Heard
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