From Longman Dictionary of Contemporary Englishwhite dwarfˌwhite ˈdwarf noun [countable] technical HAa hot star, near the end of its life, that is more solid but less bright than the Sun → red giant
Examples from the Corpus
white dwarf• One such state is called a white dwarf.• A white dwarf is supported by the exclusion principle repulsion between the electrons in its matter.• We observe a large number of these white dwarf stars.• That is about the size of a typical white dwarf, the remnant left behind after the death of a normal star. 