erg
/ɜrɡ/
noun
- A unit of work or energy in the centimeter-gram-second system, equal to the work done by a force of one dyne over a distance of one centimeter.
- One erg is a very small unit; it takes about 10 million ergs to equal one joule.
- The scientist measured the tiny amount of energy released in the reaction, which was only a few ergs.
- The light from a firefly's glow is measured in ergs per second.
- A large area of desert covered with shifting sand dunes, especially in the Sahara.
- Sandstorms are common in the erg, making travel dangerous.
- Satellite images revealed a new erg forming in the southern Sahara.
- The explorers crossed a vast erg, where dunes stretched as far as the eye could see.