Definition of quasar in English:


Syllabification: qua·sar
Pronunciation: /ˈkwāˌzär


  • A massive and extremely remote celestial object, emitting exceptionally large amounts of energy, and typically having a starlike image in a telescope. It has been suggested that quasars contain massive black holes and may represent a stage in the evolution of some galaxies.
    More example sentences
    • Astronomers believe that quasars are galaxies with very massive black holes in the center.
    • Rich in objects, from galaxies to quasars to white dwarf stars, this vast data archive will serve as a resource for the entire astronomical community.
    • Radio astronomers found pulsars, quasars, and massive molecular clouds dotting the celestial landscape.


1960s: contraction of quasistellar.

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