interfacial energy

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

(optics) A surface to which rays reflected or refracted by another surface are tangents.

capable of lowering the surface tension of a liquid

(physics) the effect on the surface of a liquid that makes it behave as a stretched elastic membrane; it is caused by unbalanced intermolecular forces / (physics) a measure of this effect

(of a missile) fired from the ground, or from a ship, at an aircraft in flight, or at an incoming missile

(of a missile) fired from an aircraft at a target on land or water

Overland flow of excess water (with or without accumulated contaminants) that cannot be absorbed by the ground as infiltration.

(geometry) A surface (in more than two dimensions, a plane is trivially developable) that can be flattened into a plane without distortion.

A numerical description of the flatness or roughness of a surface, especially an optical or machined surface.