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        | 3D printer An output device that produces solid |  | Definition 
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        | 3D models using a modified inkjet printer and |  | Definition 
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        | Abnormal data Data used to test a system. Data |  | Definition 
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        | that is of the wrong type (for example, text where |  | Definition 
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        | it should be numeric) or is outside the accepted |  | Definition 
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        | Absolute reference Fixes a cell reference within |  | Definition 
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        | a spreadsheet so that when the formula is copied, |  | Definition 
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        | this cell reference never changes. |  | Definition 
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        | Absolute value Fixes a value so that it cannot |  | Definition 
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        | change. For example, in a web page, a table width |  | Definition 
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        | can be set to 300 points. This table will always |  | Definition 
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