collapsar

[ kuh-lap-sahr ]
/ kəˈlæp sɑr /

noun Astronomy.

(formerly) a gravitationally collapsed star.
Compare black hole.

Origin of collapsar

1970–75; collapse + -ar, extracted from pulsar, quasar, etc.

British Dictionary definitions for collapsar

collapsar
/ (kɒˈlæpsɑː) /

noun

astronomy a collapsed star, either a white dwarf, neutron star, or black hole