Etymology
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quasar (n.)

1964, from "quas(i-stell)ar radio source" (1963); see quasi- + stellar. So called because they resembled stars in photographic images; now thought to be massive, distant, extremely luminous active galactic nuclei.

updated on March 02, 2021

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Definitions of quasar from WordNet

quasar (n.)
a starlike object that may send out radio waves and other forms of energy; many have large red shifts;
Synonyms: quasi-stellar radio source
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.