Noun
centimetre-gram-second (uncountable)
Alternative spelling of centimeter-gram-second
It is based on the metre-kilogram-second system of units (MKS) rather than any variant of the centimetre-gram-second system (CGS). Source: Internet
The SI was developed in 1960 from the metre-kilogram- second (MKS) system, rather than the centimetre-gram-second (CGS) system, which, in turn, had many variants. Source: Internet