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collapsar

[kuh-lap-sahr]
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noun Astronomy.
  1. (formerly) a gravitationally collapsed star.
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Compare black hole.

Origin of collapsar

1970–75; collapse + -ar, extracted from pulsar, quasar, etc.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for collapsar

collapsar

noun
  1. astronomy a collapsed star, either a white dwarf, neutron star, or black hole
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012