Definition of collapsar in English:


Syllabification: col·lap·sar
Pronunciation: /kəˈlapˌsär


  • An old star that has collapsed under its own gravity to form a white dwarf, neutron star, or black hole.
    More example sentences
    • Two papers scheduled for an upcoming Astrophysical Journal Letters appear to support the collapsar model.
    • Still, the collapsar is an extremely attractive model that fits a wide range of observed gamma-ray bursts.
    • Pruet and his colleagues are also investigating whether collapsars might be the sources of other elements as well.


late 20th century: from collapse, on the pattern of words such as pulsar.

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