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A unit of dry measure in several countries of the Middle East, standardized in Egypt to equal 198 liters (5.62 US bushels) but varying widely elsewhere.
[Arabic dialectal 'ardabb, from Aramaic 'rdb or Coptic artab or Greek artabē, all probably of Old Persian origin.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Units) a unit of dry measure used in Egypt and other Middle Eastern countries. In Egypt it is approximately equal to 0.195 cubic metres
[C19: from Arabic ardabb, from Greek artabē a Persian measure]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a unit of capacity in Egypt and neighboring countries officially equivalent in Egypt to 5.62 U.S. bushels.
[1860–65; < dial. Arabic ardabb « Aramaic 'rdb, perhaps < Old Persian]
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