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nova

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