1. 
   two-dimensional
   [adj] - lacking the expected range or depth
   Found op http://www.webdictionary.co.uk/definition.php?query=two-dimensional
   
   
2. 
   Two-Dimensional
   Two Dimensional Bar codes are special rectangular codes which ‘stack’ information in a manner allowing for more information storage in a smaller amount of space. These are also referred to as ‘Stacked’ Bar Codes or ‘Matrixâ€ââ...
   Found op http://www.thebarcodewarehouse.co.uk/help/glossary.xhtml
   
   
3. 
   two-dimensional
   2-dimensional adjective lacking the expected range or depth; not designed to give an illusion or depth; `a film with two-dimensional characters`; `a flat two-dimensional painting`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=two-dimensional
   
   
4. 
   two-dimensional
   Describing a flat shape having two measurements, or dimensions: length and width. Examples of 2D shapes are square, rectangle, hexagon, and triangle. Accurate drawings of 2D shapes can be constructed and 2D representations of three-dimensional (3D) shapes, consisting of plan, elevations (side views)...
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0097186.html
   
   
5. 
   two-dimensional
   Having the dimensions of height and width only.
   Found op http://www.ackland.org/tours/classes/glossary.html
   
   

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