erg

erg

1 [urg]
noun Physics.
the centimeter-gram-second unit of work or energy, equal to the work done by a force of one dyne when its point of application moves through a distance of one centimeter in the direction of the force; 10− 7 joule.

Origin:
1870–75; < Greek érgon work

Dictionary.com Unabridged

erg

2 [erg]
noun Geology.
a vast area covered with sand and shifting dunes, as parts of the Sahara Desert.

Origin:
1870–75; < French < Arabic ʾirq

erg-

variant of ergo-1. before a vowel: ergodic.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
erg1 (ɜːɡ)
 
n
the cgs unit of work or energy. 1 erg is equivalent to 10--7 joule
 
[C19: from Greek ergon work]

erg2 (ɜːɡ)
 
n , pl ergs, areg
an area of shifting sand dunes in a desert, esp the Sahara
 
[C19: from Arabic `irj]

erg3 (ɜːɡ)
 
n
informal short for ergometer

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

erg
"unit of energy in the C.G.S. system," coined 1873 by the British Association for the Advancement of Science from Gk. ergon "work" (see urge (v.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

erg (ûrg)
n.
The centimeter-gram-second unit of energy or work equal to the work done by a force of one dyne acting over a distance of one centimeter.

ERG abbr.
electroretinogram

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
erg 1   (ûrg)  Pronunciation Key 
The unit of energy or work in the centimeter-gram-second system, equal to the force of one dyne over a distance of one centimeter. This unit has been mostly replaced by the joule.
erg 2   (ûrg)  Pronunciation Key 
An extensive area of desert covered with sand dunes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
ERG
electroretinogram
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

erg

in a desert region, area of large accumulation of sand, generally in the bottom of a huge basin in which a former river piled up alluvium. Ergs are areas of actively shifting dunes, "fossilized" dunes, or extensive sand sheets. The sand is generally loose and is extremely difficult to cross. In the Sahara Desert between Beni Abbes in Algeria and Ghadamis in Libya, the Great Western and Great Eastern ergs are the most difficult of all Saharan areas and are generally avoided by modern trans-Saharan routes. The Libyan Desert is another extensive area of unmitigated sandy waste.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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