Definitions for "BLACK DWARF"
Small dense compact star, no longer radiating, which is the final state of a white dwarf or results when a star is too small to initiate nuclear fusion.
A non-radiating ball of gas that results either when a white dwarf radiates all its energy or when gas contracts gravitationally but contains too little mass to begin nuclear fusion.
A presumed final state of evolution for a low-mass star, in which all of its energy sources are exhausted and it no longer emits significant radiation.