English

Definition of quasar noun from the Oxford Advanced Learner's Dictionary

 

quasar

 noun
noun
BrE BrE//ˈkweɪzɑː(r)//
 
; NAmE NAmE//ˈkweɪzɑːr//
 
(astronomy)
 
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a large object like a star, that is far away and that shines very brightly and occasionally sends out strong radio signals compare pulsar Word Origin 1960s: contraction of quasi-stellar.
See the Oxford Advanced American Dictionary entry: quasar