gM

GM is an abbreviation that can refer to several distinct terms across different fields. Because meaning depends on context, it is often written as GM, gm, or as part of a longer term.

General Motors, an American multinational automotive corporation founded in 1908, is one of the world's largest automakers. It designs, builds, and sells vehicles and parts and owns several brands including Chevrolet, GMC, Buick, and Cadillac.

In physics and astronomy, GM denotes the standard gravitational parameter, the product of the gravitational constant G and the mass M of a body. It is used in orbital mechanics and spaceflight calculations; for Earth, μ ≈ 3.986 × 10^14 m^3 s^-2.

In statistics, GM stands for the geometric mean, the nth root of the product of n numbers. It summarizes proportional growth and is different from the arithmetic mean.

GM can also refer to a general manager, a senior executive responsible for overall operations in a company or sports organization. In agriculture, GM is used to indicate genetically modified organisms or crops, a term common in regulatory and scientific contexts.

In informal online communication, gm is a greeting meaning good morning. The meaning of GM/gm varies by domain, so context is important to determine which interpretation applies.