noun🔗Share신성Any sudden brightening of a previously inconspicuous star.""Astronomers were excited to observe a nova appear suddenly in the night sky, where previously there had only been a faint star." "천문학자들은 이전에 희미한 별만 있던 밤하늘에 신성이 갑자기 나타나는 것을 관찰하고 흥분했다.astronomyspacesciencephenomenaChat with AIVocabulary GamePractice Reading