• synonyms


[sas-truh-guh, sah-struh-, sa-stroo-, sah-]
noun, plural sas·tru·gi [sas-truh-gee, sah-struh-, sa-stroo-, sah-] /ˈsæs trə gi, ˈsɑ strə-, sæˈstru-, sɑ-/.
  1. Usually sastrugi. ridges of snow formed on a snowfield by the action of the wind.
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Also zastruga.

Origin of sastruga

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)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sastrugi

Historical Examples

  • The surface was also perfectly level; there was not a sign of sastrugi in any direction.

    The South Pole, Volumes 1 and 2

    Roald Amundsen

  • The wind was practically along the sastrugi and the course was diagonal to both.

  • The light was bad, and steering had to be done by sastrugi and wind.

  • They had kept a course roughly by the wind and the direction of sastrugi.

  • What the course was we did not care as we steered by the sastrugi.

British Dictionary definitions for sastrugi



  1. one of a series of ridges on snow-covered plains, caused by the action of wind laden with ice particles
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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

sastrugi in Science


[să-strōōgə, sästrə-]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.