

Glossary X
Browse through our glossary to find out definitions for bar coding and RFID terms.
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| Glossary Term | Definition |
| X-DIMENSION | The “X”-dimension is the narrowest bar or space in the bar code. This bar or space is measured in millimeters (mil=1/1000 of an inch). The “X”-dimension defines the density of a linear symbology. Depending on what the “X”-dimension of a bar code is, the bar code will be called either high density or low density. |
| XML | eXtensible Markup Language (XML): A widely accepted way of sharing information over the Internet in a standard, generic way. |

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