flare star

English Thesaurus

1. a red dwarf star in which luminosity can change several magnitudes in a few minutes (noun.object)

hypernym	:	red dwarf, red dwarf star,
definition	:	a small, old, relatively cool star; approximately 100 times the mass of Jupiter (noun.object)

instance hyponym	:	proxima, proxima centauri,
definition	:	the nearest star to the sun; distance: 4.3 light years (noun.object)