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| | compound - a Whatis.com definition |
 | | 1) In chemistry, a compound is a substance that results from a combination of two or more different chemical elements, in such a way that the atoms of the different elements are held together by chemical bonds that are difficult to break. |
 | | Sometimes, when an element is exposed to a compound, a reaction occurs in which new compounds are formed (as when pure elemental sodium is immersed in liquid water). |
 | | Examples of this usage include compound eye (found in various insects), compound microscope (a high-power magnifying instrument consisting of more than one lens), compound sentence (a sentence that is a conjunction or disjunction of smaller sentences), and compound document, an organized collection of user interfaces that form a single integrated perceptual environment. |
| whatis.techtarget.com /definition/0,,sid9_gci859528,00.html (413 words) |
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