(Downward) pressure.

The action of impressing or exerting pressure upon.

The action of weighing or pressing down on something. Obsolete.

= superincumbence, n.

The quality or fact of being superincumbent (in various senses); the condition of lying or pressing on something; (figurative) pressure, weightiness.

The action of lying or pressing upon. (In quot. 1760 figurative.)

The action of impressing; exertion of pressure.