Definition

1. Noun:

   • The outermost or topmost layer of something: The "surface" is the exterior boundary or the part that is in direct contact with the environment. It can be of a physical object, a body of water, or land.
   • A superficial or outward aspect: The "surface" can refer to the apparent, often misleading, quality of something, as opposed to its deeper, true nature.
   • A continuous two-dimensional extent: In mathematics and geometry, a "surface" is a two-dimensional shape that forms the boundary of a three-dimensional object.

2. Adjective:

   • Relating to or located on the surface: Used to describe something that exists on, affects, or is characteristic of the outer layer.

3. Verb:

   • To rise to the top of a liquid; to emerge: To come up to or appear on the surface of something, especially water.
   • To become apparent or known: For information, feelings, or problems to emerge into public view or consciousness.
   • To apply an outer layer to something: To cover the exterior of an object with a material.

Usage Examples

• Noun:

  • The table's surface was smooth and polished. (The top layer of the table was smooth.)
  • Beneath his calm surface, he was very anxious. (Under his outward appearance of calm, he was anxious.)
  • Most of the Earth's surface is covered by water. (The exterior layer of the planet is mostly water.)

• Adjective:

  • The surface temperature of the lake was warm. (The temperature at the lake's top layer was warm.)
  • It was only a surface wound, not deep. (The injury affected only the outer layer of skin.)

• Verb:

  • The submarine will surface at dawn. (The submarine will rise to the top of the water.)
  • New evidence has surfaced in the investigation. (New evidence has emerged or become known.)
  • They decided to surface the road with asphalt. (They decided to cover the road with an asphalt layer.)

Advanced Usage

• "To scratch/scrape the surface": To deal with or understand only a small, superficial part of a larger issue or subject.
  • Our research has only scratched the surface of this complex problem.
• "On the surface": Superficially; based on a first, often deceptive, impression.
  • On the surface, the plan seems perfect, but it has many hidden flaws.

Variants and Related Words

• Surfacing (n/gerund): The material used to form a surface, or the process of coming to the surface.
  • The surfacing of the tennis court is new.
• Resurface (v): To put a new surface on something, or to appear again.
  • They will resurface the parking lot next week. The old rumors have resurfaced.

Synonyms

• Noun: Exterior, face, facade, outside, top.
• Verb: Emerge, appear, materialize, coat, cover.

Related Phrasal Verbs

• Surface with: To cover something with a particular material.
  • The counter was surfaced with granite.

Related Idioms

• Below/beneath the surface: Hidden from immediate view; referring to deeper, less obvious feelings or truths.
  • Her anger was simmering just below the surface.
• Come to the surface: To become publicly known or visible.
  • Many old tensions came to the surface during the debate.

Noun

1. a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight
2. information that has become public
   • all the reports were out in the open
   • the facts had been brought to the surface
3. a superficial aspect as opposed to the real nature of something
   • it was not what it appeared to be on the surface
4. the outermost level of the land or sea
   • earthquakes originate far below the surface
   • three quarters of the Earth's surface is covered by water
5. the extended two-dimensional outer boundary of a three-dimensional object
   • they skimmed over the surface of the water
   • a brush small enough to clean every dental surface
   • the sun has no distinct surface
6. the outer boundary of an artifact or a material layer constituting or resembling such a boundary
   • there is a special cleaner for these surfaces
   • the cloth had a pattern of red dots on a white surface

Adjective

1. on the surface
   • surface materials of the moon

Verb

1. appear or become visible; make a showing
   • She turned up at the funeral
   • I hope the list key is going to surface again
2. put a coat on; cover the surface of; furnish with a surface
   • coat the cake with chocolate
3. come to the surface