'Erg' definitions:

Definition of 'erg'

From: WordNet
noun
A cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter

Definition of 'Erg'

From: GCIDE
  • Erg \Erg\, n. [Gr. ? work.] (Physics) The unit of work or energy in the C. G. S. system, being the amount of work done by a dyne working through a distance of one centimeter; the amount of energy expended in moving a body one centimeter against a force of one dyne (981 dynes exert the same force as a one gram mass in the earth's gravitational field). One foot pound is equal to 13,560,000 ergs. The absolute Joule is equivalent to 10^7 ergs, which are equivalent to 0.2389 gram-calories at 15[deg] C. See also mechanical equivalent of heat under equivalent. [1913 Webster +PJC]