| Term | Definition / Meaning / Stand for |
| XyWrite |
A word processor popular with writers and publishers |
| Xref |
Cross-Reference (used in publishing for referencing other parts of a document) |
| XREF-PUB |
Cross-Reference Publishing (used in citation and document linking) |
| XPRT |
Export Report (used in publishing and print production) |
| XPR |
Exported Proof (used in prepress and publishing) |
| XCCDF |
XML Content Creation and Distribution Framework |
| XCI |
XML Content Integration (used in digital publishing systems) |
| XCMS |
XML Content Management System (used for digital publishing platforms) |
| XDI |
XML Data Interchange (used in digital publishing) |
| XDB |
XML Database (used in publishing workflows) |
| XDBMS |
XML Database Management System (used in content storage and retrieval) |
| XDN |
XML Document Network (used in digital publishing) |
| XED |
XML Editing Document (used in editorial processes) |
| XEN |
XML Editing Notation (used in editorial workflows) |
| XFORM |
XML Forms (used in content structuring for publishing) |
| XGen |
XML Generator (used in digital publishing workflows) |
| XIN |
XML Inline Notation (used in digital document publishing) |
| XLD |
XML Layout Definition (used in magazine and book layout design) |
| XLRN |
XML Learning Resource Network (used in educational publishing) |
| XLR |
XML Literary Repository (used in digital book publishing) |
| XMD |
XML Metadata Document (used for content classification) |
| XMP-RDF |
XML Metadata Platform - Resource Description Framework (used in content metadata) |
| XMPD |
XML Metadata Processing Document (used in publishing workflows) |
| XMOD |
XML Module (used in structured publishing systems) |
| XPI |
XML Package Interface (used in structured document publishing) |
| XPUB |
XML Publishing Format (used for structured publishing workflows) |
| XQT |
XML Query Tool (used for searching content in publishing databases) |
| XRD |
XML Resource Description (used for metadata in publishing) |
| XScript |
XML Script (used in publishing automation) |
| XSS |
XML Stylesheet System (used in formatting XML documents for publishing) |
| XTXT |
XML Text Format (used for structured text in publishing) |
| XWP |
XML Workflow Publishing (used for automated content workflows) |
| XPub |
XML-Based Publishing (used for structured document creation) |
| XPS-PDF |
XPS to PDF Conversion (used in digital publishing and printing) |
| XER |
Xerox Electronic Reproduction (used in printing and publishing) |
| XID |
Xerox Image Data (used in digital printing and publishing) |
| XOB |
Xerox Output Bundle (used in high-volume publishing) |
| XPA |
Xerox Publishing Architecture (used in document management and publishing) |
| XP |
Experience Points (for gamified learning content) |
| XR |
Extended Reality (for digital publishing) |
| XBRL |
eXtensible Business Reporting Language (used in publishing financial documents) |
| XHTML |
Extensible Hypertext Markup Language (used in web publishing) |
| XML |
Extensible Markup Language (metadata for books) |
| XML |
Extensible Markup Language (widely used in digital publishing) |
| XMP |
Extensible Metadata Platform (used for managing document metadata) |
| XSLT |
Extensible Stylesheet Language Transformations (used for transforming XML content) |
| XSL |
Extensible Stylesheet Language (used for formatting XML documents) |
| XLang |
XML Language (used for content and metadata structuring) |
| XOM |
XML Object Model (used in content structure for publishing) |
| XPS |
XML Paper Specification (a document format similar to PDF) |
| XPDL |
XML Process Definition Language (sometimes used in workflow publishing) |
| XSD |
XML Schema Definition (used in structured publishing) |
| XUI |
XML User Interface (used in digital publishing applications) |