The outermost layer or boundary of an object or area. The surface of the table was smooth and polished.
The outward appearance or aspect of something, often as distinct from its true nature. Beneath the surface of his calm demeanor, he was very anxious.
The flat, uppermost part of a body of water. The ducks were gliding across the surface of the pond.
A continuous set of points that has length and breadth but no thickness, often used in mathematics. In geometry, a plane is considered a flat surface.
To rise to the surface of a body of water. The submarine surfaced after being submerged for several hours.
To become apparent or known. New evidence has surfaced in the investigation.
To apply a surface to something. They plan to surface the road with new asphalt next week.
To come up to the surface of the ground. The mole surfaced in the garden, leaving small mounds of earth.