hydrostatic equilibrium

Noun

 * 1)  The condition in which the shape of a liquid body is in long-term (static) equilibrium under the forces acting on it.
 * 2)  The state in which a sufficiently massive or warm solid body has relaxed under its own gravity into the plastic shape that it would have if it were liquid, apart possibly from rigid features in the crust.

Translations

 * Finnish: hydrostaattinen tasapaino
 * French:
 * Polish: równowaga hydrostatyczna