black hole star

== English == === Etymology === From black hole +‎ star. From being a radiant spherical celestial object containing a black hole. === Noun === black hole star (plural black hole stars) (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. ==== Synonyms ==== ==== Coordinate terms ==== ==== Related terms ====