(grams)

An extension of BNF used by the SIS compiler generator. ["SIS - Semantics Implementation System", P.D. Mosses, TR DAIMI MD-30, Aarhus U, Denmark]. (1995-01-23)

The unit of weight in the metric system; accepted as the unit of mass in the absolute of C. G. S. system of units. It is the one-thousandth part of mass of a standard weight preserved under proper conditions in Paris, and supposed to be the mass of a cubic decimeter of distilled water at the temperature of the maximum density of water. The standard is the kilogram; the temperature is 3.9º C. (39º F.). The standard kilogram is found to be not exactly the weight of a cubic decimeter of water, the latter weighing 1.000013 kilogram. If therefore the defined gram on the water basis is taken as the unit it varies very slightly from the accepted gram. 1 gram is equal to 15.43234874 grains. (Prof. W. H. Miller.)