erg 1
/errg/ , n. 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.
[ 1870-75; érgon WORK ]
erg 2
/erg/ , n. Geol.
any vast area covered with sand, as parts of the Sahara Desert.
[ 1870-75; 'irq ]