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erg1

[urg] /ɜrg/
noun, Physics.
1.
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
1870-1875
1870-75; < Greek érgon work

erg2

[erg] /ɛrg/
noun, Geology
1.
a vast area covered with sand and shifting dunes, as parts of the Sahara Desert.
Origin
1870-75; < French < Arabic ʾirq
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ergs

erg1

/ɜːɡ/
noun
1.
the cgs unit of work or energy. 1 erg is equivalent to 10–7 joule
Word Origin
C19: from Greek ergon work

erg2

/ɜːɡ/
noun (pl) ergs, areg
1.
an area of shifting sand dunes in a desert, esp the Sahara
Word Origin
C19: from Arabic `irj

erg3

/ɜːɡ/
noun
1.
(informal) short for ergometer (sense 2)
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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Word Origin and History for ergs

erg

n.

unit of energy in the C.G.S. system, coined 1873 by the British Association for the Advancement of Science from Greek ergon "work" (see urge (v.)).

"region of drifting sand dunes," 1875, from French erg (1854), from North African Arabic 'irj, from a Berber word.

Online Etymology Dictionary, © 2010 Douglas Harper
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ergs in Medicine

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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ergs in Science
erg 1
  (ûrg)   
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)   
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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Related Abbreviations for ergs

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 Article for ergs

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.

Learn more about erg with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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