| 单词 | drumlin |
| 释义 | drumlin[ druhm-lin ] / ˈdrʌm lɪn / noun Geology.a long, narrow or oval, smoothly rounded hill of unstratified glacial drift. Origin of drumlin1825–35; drum2 + -lin, variant of -ling1 Words nearby drumlindrumhead, drumhead court-martial, drumhead service, drum into someone's head, drum kit, drumlin, drumly, drum machine, drum magazine, drum major, drum majorette Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for drumlin
British Dictionary definitions for drumlindrumlin / (ˈdrʌmlɪn) / nouna streamlined mound of glacial drift, rounded or elongated in the direction of the original flow of ice Word Origin for drumlinC19: from Irish Gaelic druim ridge + -lin -ling 1 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 drumlindrumlin [ drŭm′lĭn ] An extended, oval hill or ridge of compacted sediment deposited and shaped by a glacier. Drumlins are typically about 30 m (98 ft) high and are longer than they are wide. They have one steep and one gentle slope along their longest axis, which is parallel to the direction of the glacier's movement. The steepest slope faces the direction from which the glacier originated, and the gentler slope faces the direction in which the glacier was advancing. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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