Centimeter-gram-second. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/centimeter-gram-second
(sciences) A system of units formerly used in physics (now replaced by the SI system), in which the basic units of length, mass and time were respectively centimeter, gram, and second. Abbreviated as cgs or CGS.
English Wiktionary. Available under CC-BY-SA license.