| 单词 | noctilucent |
| 释义 | noctilucent[ nok-tuh-loo-suhnt ] / ˌnɒk təˈlu sənt / adjective Meteorology.(of high-altitude clouds) visible during the short night of the summer. Origin of noctilucentFirst recorded in 1885–90; nocti- + lucent OTHER WORDS FROM noctilucentnoc·ti·lu·cence, nounWords nearby noctilucentnoct-, noctambulism, noctambulous, nocti-, noctiluca, noctilucent, noctis, noct. maneq., noctograph, noctuid, noctule Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for noctilucentnoctilucent / (ˌnɒktɪˈluːsənt) / adjectiveshining at night, usu. of very thin high altitude clouds observable in the summer twilight sky Derived forms of noctilucentnoctilucence, nounCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for noctilucentnoctilucent [ nŏk′tə-lōō′sənt ] Luminous at night. The term is used especially to describe certain high atmospheric cloud formations visible during summer nights at high latitudes. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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