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collapsar

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WordReference Random House Unabridged Dictionary of American English © 2025

col•lap•sar n. [Astron.]

Astronomy(formerly) a gravitationally collapsed star. Cf. black hole.

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

Collins Concise English Dictionary © HarperCollins Publishers::

collapsar / kɒˈlæpsɑː/

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

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