nouns
(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 product of their masses and inversely proportional to the square of the distance between them"; "gravitation cannot be held responsible for people falling in love"--Albert Einstein
movement downward resulting from gravitational attraction
"irrigation by gravitation rather than by pumps"
is a type of (narrower)
a movement through space that changes the location of something
a figurative movement toward some attraction
"the gravitation of the middle class to the suburbs"
is a type of (narrower)
a general tendency to change (as of opinion)
"not openly liberal but that is the trend of the book"; "a broad movement of the electorate to the right"