柯林斯詞典nova /?n??v?/ 1. N a variable star that undergoes a cataclysmic eruption, observed as a sudden large increase in brightness with a subsequent decline over months or years; it is a close binary system with one component a white dwarf 新星→compare supernova 返回 nova劍橋詞典a type of star that shines much more brightly for a few months as a result of a nuclear explosion 新星（一類由于核爆炸而在數(shù)月之內(nèi)異常明亮的恒星） 返回 nova