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Definition of Surface area

Babylon English

physical size of a 2-dimensional surface contained within a border, area (e.g.: The room was about 10 square meters in area")
Surface area Definition from Science & Technology Dictionaries & Glossaries
Glossary of liquid chromatographic terms
In an adsorbent, refers to the total area of the solid surface as determined by an accepted measurement technique such as the BET method using nitrogen adsorption. The surface area of a typical porous adsorbent such as silica gel can vary from 100 to 600 m2/g.
Surface area Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
The surface area of a solid object is the total area of the object's faces and curved surfaces. The mathematical definition of surface area in the presence of curved surfaces is considerably more involved than the definition of arc length of one-dimensional curves, or of the surface area for polyhedra (i.e., objects with flat polygonal faces), for which the surface area is the sum of the areas of its faces. Smooth surfaces, such as a sphere, are assigned surface area using their representation as parametric surfaces. This definition of surface area is based on methods of infinitesimal calculus and involves partial derivatives and double integration.

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Surface area Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

Noun
1. the extent of a 2-dimensional surface enclosed within a boundary; "the area of a rectangle"; "it was about 500 square feet in area"
(synonym) area, expanse
(hypernym) extent
(hyponym) acreage, land area