Dictionary

quasar

noun qua·sar \ˈkwā-ˌzär also -ˌsär\

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

Full Definition of QUASAR

:  any of a class of celestial objects that resemble stars but whose large redshift and apparent brightness imply extreme distance and huge energy output

Origin of QUASAR

quasi-stellar
First Known Use: 1964

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