单词 | moraine |
释义 | moraine[ muh-reyn ] / məˈreɪn / SEE SYNONYMS FOR moraine ON THESAURUS.COM nouna ridge, mound, or irregular mass of unstratified glacial drift, chiefly boulders, gravel, sand, and clay. a deposit of such material left on the ground by a glacier. Origin of moraineFirst recorded in 1780–90; from French, from Savoyard dialect morêna “rise in the ground along the lower edge of a sloping field,” equivalent to mour(o) “mound, accumulation of earth” (from unattested murr- “mound, elevation,” apparently pre-Latin ) + -ena suffix of landforms, probably of pre-Latin origin; compare Upper Italian (Piedmont) morena “heap of organic detritus,” Spanish moreña “heap of stones, moraine” OTHER WORDS FROM morainemo·rain·al, mo·rain·ic, adjectiveWords nearby morainemora, moraceous, Moradabad, moraea, Moraga, moraine, moral, moral compass, morale, moral hazard, moralism Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for moraineBritish Dictionary definitions for morainemoraine / (mɒˈreɪn) / nouna mass of debris, carried by glaciers and forming ridges and mounds when deposited Derived forms of morainemorainal or morainic, adjectiveWord Origin for moraineC18: from French, from Savoy dialect morena, of obscure origin 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 morainemoraine [ (muh-rayn) ] A pile of debris, often extending for miles, deposited by a glacier. It is composed of rock fragments transported by the ice, which are left behind when the ice melts. 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 morainemoraine [ mə-rān′ ] A mass of till (boulders, pebbles, sand, and mud) deposited by a glacier, often in the form of a long ridge. Moraines typically form because of the plowing effect of a moving glacier, which causes it to pick up rock fragments and sediments as it moves, and because of the periodic melting of the ice, which causes the glacier to deposit these materials during warmer intervals.♦ A moraine deposited in front of a glacier is a terminal moraine. ♦ A moraine deposited along the side of a glacier is a lateral moraine. ♦ A moraine deposited down the middle of a glacier is a medial moraine. Medial moraines are actually the combined lateral moraines of two glaciers that have merged. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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