Lying above or upon something else; overlying. Also with to. Frequently in technical use.

That lies, leans, rests, or presses with its weight upon something else. Const. on.

Standing or resting on something. rare.

Lying upon, overlying; = incumbent, adj. 1.

Chiefly in scientific contexts: lying or resting upon, or situated on the top of something else; overlying.

Resting, superincumbent: cf. insist, v. 1.

That overlies something.

That rests upon, overlaps, or projects over something. Cf. ride, v. 21b 22, overriding, adj. 2. Now rare.