| 单词 | cepheid variable |
| 释义 | Cepheid variableor cepheid variablenoun Astronomy.a variable star in which changes in brightness are due to alternate contractions and expansions in volume. Origin of Cepheid variableFirst recorded in 1900–05; Cephe(us) + -id1 Words nearby Cepheid variablecephalothorax, cephalous, Cephalus, -cephaly, Cepheid, Cepheid variable, Cepheus, 'cept, -ceptor, cer-, cera Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for Cepheid variableCepheid variable / (ˈsiːfɪɪd) / nounastronomy any of a class of variable stars with regular cycles of variations in luminosity (most ranging from three to fifty days). There is a relationship between the periods of variation and the absolute magnitudes, which is used for measuring the distance of such stars 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 |
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