- Hyphenation: g‧force
- (uncountable) G-force is another word for gravity, the force of universal attraction between particles of matter. Large bodies, like planets and moons, can attract smaller objects to them, giving these objects weight. The strength of g-force is different on each body.
- On the Moon, astronauts weighing 200 kg move as easily as if they weighed 35 kg on Earth, because the g-force is six times lesser here.