Also known as: GM+, GM-, GM.
GM has various meanings in the Unit Of Measurement category. Discover the full forms, definitions, and usage contexts of GM in Unit Of Measurement.
Unit of mass in the SI system of weights. Symbol g. A metric unit of mass, equal to 1/1000 of a kilogram. Kilograms are the base SI units for mass, not grams. A gram is metric unit of measure for mass. It is the weight of one milliliter of water at a temperature of 39.2 degrees Fahrenheit. The basic unit of mass in the metric system.
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