单词 | nova |
释义 | nova[ noh-vuh ] / ˈnoʊ və / SEE SYNONYMS FOR nova ON THESAURUS.COM noun, plural no·vas, no·vae [noh-vee]. /ˈnoʊ vi/. Astronomy.a star that suddenly becomes thousands of times brighter and then gradually fades to its original intensity. Compare supernova. Origin of nova1680–90; <New Latin: noun use of feminine of Latin novusnew OTHER WORDS FROM novano·va·like, adjectiveWords nearby novaNouvelle-Calédonie, nouvelle cuisine, nouvelles, nouvelle vague, nov., nova, Novachord, novaculite, Nova Iguaçu, Novalis, Nova Lisboa Definition for nova (2 of 2)Nova [ noh-vuh ] / ˈnoʊ və / nounAlso called Nova Salmon. a Pacific salmon cured in the style of Nova Scotia salmon. (lowercase) (loosely) any smoked salmon. Compare Nova Scotia salmon. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for novaBritish Dictionary definitions for novanova / (ˈnəʊvə) / noun plural -vae (-viː) or -vasa 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 dwarfCompare supernova Word Origin for novaC19: New Latin nova (stella) new (star), from Latin novus new Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for novanova [ (noh-vuh) ] In astronomy, the appearance of a new star in the sky (nova is Latin for “new”). Novae are usually associated with the last stages in the life of a star. (See supernova.) The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for novanova [ nō′və ] Plural novae (nō′vē) novasA white dwarf star that suddenly and temporarily becomes extremely bright as a result of the explosion at its surface of material accreted from an expanding companion star. The material, mostly hydrogen and helium, is attracted by the white dwarf's gravity and accumulates under growing pressure and heat until nuclear fusion is ignited. Unlike a supernova, a nova is not blown apart by the explosion and gradually returns to its original brightness over a period of weeks to years. Because of their sudden appearance where no star had been previously visible, novae were long thought to be new stars. Since 1925, novae have been classified as variable stars. Compare supernova. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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