- surface
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I. noun
Etymology: French, from Middle French, from sur- + face face, from Old French — more at face
Date: circa 1600
1. the exterior or upper boundary of an object or body <on the surface of the water> <the earth's surface> 2. a plane or curved two-dimensional locus of points (as the boundary of a three-dimensional region) <plane surface> <surface of a sphere> 3. a. the external or superficial aspect of something <trouble lurks below the surface> b. an external part or layer <sanded the rough surfaces> II. adjective Date: 1642 1. a. of, located on, or designed for use at the surface of something b. situated, transported, or employed on the surface of the earth <surface mail> <surface vehicles> 2. appearing to be such on the surface only ; superficial <surface friendships> III. verb (surfaced; surfacing) Date: 1778 transitive verb 1. to give a surface to: as a. to plane or make smooth b. to apply the surface layer to <surface a highway> 2. to bring to the surface <surface a sunken ship> intransitive verb 1. to work on or at the surface 2. to come to the surface 3. to come into public view ; show up <letters that have recently surfaced> • surfacer noun
New Collegiate Dictionary. 2001.