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sastruga

[sas-truh-guh, sah-struh-, sa-stroo-, sah-] /ˈsæs trə gə, ˈsɑ strə-, sæˈstru-, sɑ-/
noun, plural sastrugi
[sas-truh-gee, sah-struh-, sa-stroo-, sah-] /ˈsæs trə gi, ˈsɑ strə-, sæˈstru-, sɑ-/ (Show IPA)
1.
Usually, sastrugi. ridges of snow formed on a snowfield by the action of the wind.
Also, zastruga.
Origin
dialectal Russian
1830-1840
1830-40; < German < dialectal Russian zastrúga, noun derivative of zastrugátʾ, zastrogátʾ to plane, shave down (wood), equivalent to za- perfective v. prefix + strugátʾ, strogátʾ to plane, smooth (wood)
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sastrugi

sastruga

/səˈstruːɡə; sæ-/
noun
1.
one of a series of ridges on snow-covered plains, caused by the action of wind laden with ice particles
Word Origin
from Russian zastruga groove, from za by + struga deep place
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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sastrugi in Science
sastrugi (sā-str'gə, sä'strə-) also zastrugi
  (sā-str'gə, sä'strə-)
Long, wavelike ridges of snow, formed by the wind and found on the polar plains. Sastrugi are usually up to several meters high and are often parallel to the prevailing wind direction.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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