centimeter-gram-second system n.
Abbr. CGS system, cgs system The scientific system of expressing the fundamental physical units of length, mass, and time, as well as units derived from them, in centimeters, grams, and seconds.
A system of measurement in which the basic units of length, mass, and time are the centimeter, gram, and second. It is used in the United States chiefly in science, medicine, and engineering. Also called cgs system.