(physics) An abstract boundary, of constant energy, useful for predicting the thermal, electrical, magnetic, and optical properties of metals, semimetals, and doped semiconductors.

plural of surface area

(geometry) The total area on the surface of an object. / (computing) The total resources of a system that are accessible from the outside world and thus might be attacked.

Any n-dimensional surface (or line) having a constant scalar potential

Synonym of beneath the surface

(idiomatic) Beyond what is obvious.

plural of surface water

plural of surface street

plural of surface layer

plural of surface ship