Etymology : French, from sur- + face face, from Old French; more at FACE
Pronunciation : s&r-f&s
Function : noun
Date : circa 1604
1. exterior or upper boundary of a thing, external part or layer; outward appearance. provide with a surface; make smooth or even; appear on the surface, rise up to the surface; appear. of or pertaining to a surface, external; superficial. surface\sur"face`\ , n. [f. see:
sur-, and face, and cf. superficial.].
2. the exterior part of anything that has length and breadth; one of the limits that bound a solid, esp. the upper face; superficies; the outside; as, the surface of the earth; the surface of a diamond; the surface of the body. the bright surface of this ethereous mold.
3. hence, outward or external appearance. vain and weak understandings, which penetrate no deeper than the surface. knox.
4. (geom.) a magnitude that has length and breadth without thickness; superficies; as, a plane surface; a spherical surface.
5. (fort.) that part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion. --stocqueler.
6. A small plane or surface, usually capable of adjustment but not of manipulation, for preserving lateral balance in an aëroplane or flying machine.
7. The exterior part of anything that has length and breadth; one of the limits that bound a solid, esp. the upper face; superficies; the outside; as, the surface of the earth; the surface of a diamond; the surface of the body.
8. Hence, outward or external appearance.
9. A magnitude that has length and breadth without thickness; superficies; as, a plane surface; a spherical surface.
10. That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion.
11. To give a surface to; especially, to cause to have a smooth or plain surface; to make smooth or plain.
12. To work over the surface or soil of, as ground, in hunting for gold. 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" a superficial aspect as opposed to the real nature of something; "it was not what it appeared to be on the surface" 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" 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" come to the surface on the surface; "surface materials of the moon".
13. 1. The surface of something is the flat top part of it or the outside of it. Ozone forms a protective layer between 12 and 30 miles above the Earth's surface. tiny little waves on the surface of the water Its total surface area was seven thousand square feet.
14. A work surface is a flat area, for example the top of a table, desk, or kitchen cupboard, on which you can work. It can simply be left on the work surface.
15. When you refer to the surface of a situation, you are talking about what can be seen easily rather than what is hidden or not immediately obvious. Back in Britain, things appear, on the surface, simpler Social unrest, never far below the surface in Brazil, has erupted over the last few days.
16. Surface is used to describe the parts of the armed forces which travel by ship or by land rather than underwater or in the air. In contrast with its surface fleet, Britain's submarine force was relatively small.
17. If someone or something under water surfaces, they come up to the surface of the water. He surfaced, gasping for air.
18. When something such as a piece of news, a feeling, or a problem surfaces, it becomes known or becomes obvious. The paper says the evidence, when it surfaces, is certain to cause uproar = emerge.
19. When someone surfaces, they appear after not being seen for some time, for example because they have been asleep. What time do you surface?. In geometry, a two-dimensional collection of points (flat surface), a three-dimensional collection of points whose cross section is a curve (curved surface), or the boundary of any three-dimensional solid. In general, a surface is a continuous boundary dividing a three-dimensional space into two regions. For example, the surface of a sphere separates the interior from the exterior; a horizontal plane separates the half-plane above it from the half-plane below. Surfaces are often called by the names of the regions they enclose, but a surface is essentially two-dimensional and has an area, while the region it encloses is three-dimensional and has a volume. The attributes of surfaces, and in particular the idea of curvature, are investigated in differential geometry. Outermost layer of a material or substance. Because the particles (atoms or molecules) on the surface have nearest neighbours beside and below but not above, the physical and chemical properties of a surface differ from those of the bulk material; surface chemistry is thus a branch of physical chemistry. The growth of crystals, the actions of catalysts and detergents, and the phenomena of adsorption, surface tension, and capillarity are aspects of behaviour at surfaces. The appearance of the surface, whether achieved with electroplating, paint, oxidation-reduction, bleaching (see:
bleach), or another means, is aesthetically important.
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