Definition that contains gravitational force
- infusion (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
- dark matter (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force
- gravity gradient a gradient in the gravitational forces acting on different parts of a nonspherical object