noun[mass noun] Astronomy
The gravitational forces acting among the components of a massive body.
More example sentences
- Since gravitation is a very weak force compared to electrical or nuclear interactions, small objects that are normally encountered are not held together by self-gravitation.
- The rapid expansion would prevent islands of material separating out from the global expansion and becoming bound by their own self-gravitation.
Definition of self-gravitation in:
- The US English dictionary