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Pronunciation varies by accent · noun
(astronomy, cosmology) 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..
Use quasistar when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Quasistar means (astronomy, cosmology) 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..
Common synonyms include black hole star.
The opposite depends on the specific sense.
Use quasistar where its definition matches the intended context.
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