What does "quasistar" mean?

A theoretical early universe object, with the outer layers of a star and a black hole for a stellar core. Theorized to be born of an ultramassive pre-stellar nebula collapse to an ultramassive protostar, and later birthing an intermediate mass black hole when the star's life ends.

What is a synonym for "quasistar"?

Common synonyms include: black hole star.

Quasistar

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A theoretical early universe object, with the outer layers of a star and a black hole for a stellar core. Theorized to be born of an ultramassive pre-stellar nebula collapse to an ultramassive protostar, and later birthing an intermediate mass black hole when the star's life ends.

Synonyms

All synonyms

black hole star

Etymology

From quasi- + star.

Related phrases

black hole

More for "quasistar"

Synonyms Sentences Pronunciation Translate

Next best steps

Find stronger synonyms See usage examples Check pronunciation Browse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.