CGS System
CGS System, also centimeter-gram-second system (usually written “cgs system”), a metric system based on the centimeter (c) for length, the gram (g) for mass , and the second (s) for time. It is derived from the meter-kilogram-second (or mks) system but uses certain special designations such as the dyne (for force ) and the erg (for energy ). It has generally been employed where small quantities are encountered, as in physics and chemistry .