[urg] 
| 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. |
[erg] | any vast area covered with sand, as parts of the Sahara Desert. |
| var. of ergo- 1 before a vowel: ergodic. |
| a combining form meaning “work”: ergograph. |
| 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. [From Greek ergon, work; see werg- in Indo-European roots.] |
electroretinogram e·lec·tro·ret·i·no·gram (ĭ-lěk'trō-rět'n-ə-grām')
n.
Abbr. ERG A graphic record of the electrical activity of the retina.
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
ergo- pref.
Work: ergometer.
| 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. |
| ERG electroretinogram |
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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