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wadi

 - 4 dictionary results

wa⋅di

[wah-dee]
–noun, plural -dis. (in Arabia, Syria, northern Africa, etc.)
1. the channel of a watercourse that is dry except during periods of rainfall.
2. such a stream or watercourse itself.
3. a valley.
Also, wady.


Origin:
1830–40; < Ar wādī
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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wa·di also wa·dy   (wä'dē)   
n.   pl. wa·dis also wa·dies
    1. A valley, gully, or streambed in northern Africa and southwest Asia that remains dry except during the rainy season.

    2. A stream that flows through such a channel.

  1. An oasis.


[Arabic wādi; see wdy in Semitic roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

wadi 
"watercourse," 1839, from Arabic wadi "seasonal watercourse," prop. part. of wada "it flowed."
Online Etymology Dictionary, © 2001 Douglas Harper
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Encyclopedia

wadi

a dry channel lying in a semiarid or desert area and subject to flash flooding during seasonal or irregular rainstorms. Such transitory streams, rivers, or creeks are noted for their gullying effects and especially for their rapid rates of erosion, transportation, and deposition. There have been reports of up to 8 feet (2 m) of deposition in 60 years and like amounts of erosion during a single flood event

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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