| 单词 | frostline |
| 释义 | frostline[ frawst-lahyn, frost- ] / ˈfrɔstˌlaɪn, ˈfrɒst- / nounthe maximum depth at which soil is frozen. the lower limit of permafrost. Compare permafrost table. Origin of frostlineAn Americanism dating back to 1860–65; frost + line1 Words nearby frostlinefrost heave, frost hollow, frosting, frosting on the cake, Frost-Lang operation, frostline, frost point, Frost, Robert, frost smoke, frost stud, Frost suture Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for frostlinefrost line nounthe deepest point in the ground to which frost will penetrate the limit towards the equator beyond which frosts do not occur 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 Scientific definitions for frostlinefrost line In regions where there is no permafrost, the maximum depth to which frost penetrates the ground in the winter. The lower limit of permafrost. In tropical regions, the elevation below which frost never occurs. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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