Definition:Metric System/Mass/Gram

Definition
The gram is the CGS base unit of mass.

It was defined on 7 April 1795 to be equal to:
 * the mass of a volume of water equal to the cube of the hundredth part of the meter, at the temperature of melting ice.

The original British English spelling was gramme, but this is rarely used nowadays, as the American gram is now the international standard.

In the SI unit system, one gram is defined as $$\frac 1 {1000}$$ of a kilogram.

Symbol
The symbol for the gram is $$\mathrm g$$.

Also see

 * Kilogram