definition of
gravitation

[1] #1 gravitation n. [gravity, gravitational attraction, gravitational force] (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to the pr. wn

[2] #2 gravitation n. movement downward resulting from gravitational attraction; "irrigation by gravitation rather than by pumps". wn

[3] #3 gravitation n. a figurative movement toward some attraction; "the gravitation of the middle class to the suburbs". wn