nova
noun /ˈnəʊvə/
/ˈnəʊvə/
(plural novae
(astronomy /ˈnəʊviː/
/ˈnəʊviː/
, novas)- a star that suddenly becomes much brighter for a short period
新星（短期内突然变得很亮） 词源late 19th cent.: from Latin, feminine of novus ‘new’ (because such stars were thought to be newly formed).