| Subject | English | Welsh |
| comp., MS | application definition | diffiniad rhaglen (A file that describes a database or Web service and includes connection settings, authentication mode, definitions of available entities, and other information) |
| comp., MS | definitions callout | swigen siarad diffiniadau (A callout that is invoked through contextual UI to display reference data, such as definitions and synonyms, for the word selected) |
| comp., MS | document type definition | diffiniad math o ddogfen (A set of syntax rules for mark-up tags and their interpretation. Within an HTML (or XML) document, a DTD provides specific information on what tags are used in the document (and in what order those tags should appear), which tags can appear inside other ones, which tags have attributes, and so forth. Originally developed for use with Standard Generalized Markup Language (SGML), DTD defines the relationships between document elements) |
| comp., MS | extracted definition | diffiniad wedi'i echdynnu (The definition that is obtained by an index server during a crawl, to identify if any sentences in the item match the pattern for defining a term) |
| comp., MS | feature definition | diffiniad o'r nodwedd (An XML fragment that defines a feature and its attributes) |
| comp., MS | federated location definition | diffiniad o leoliad ffederal (The configuration settings that describe how to issue a query for a given federated location and display the search results) |
| comp., MS | form definition file | ffeil diffiniad maes (An XML file with an .xsf extension that contains information about all other files and components used within a form, including user interface customizations, XML Schemas, views, business logic, events, and deployment settings) |
| comp., MS | high-definition DVD | DVD diffiniad uchel (A high definition optical disc format which uses a smaller focus blue-violet 405 nm laser allowing higher precision and storage density. A competitor to Blu-ray Disc) |
| comp., MS | high-definition multimedia interface | rhyngwyneb amlgyfrwng diffiniad uchel (A digital interface specification for delivering digital content and connecting consumer electronic devices) |
| comp., MS | job definition | diffiniad o'r dasg (A persistent container that defines and stores instructions for a job to be run on a server, server farm, or server cluster. To run, a job must have an associated job definition, and a definition must be associated with a service or a Web application) |
| comp., MS | Office compatibility definition file | Ffeil diffiniadau cydnawsedd Office (A file that stores information about compatibility issues and workarounds and makes it available to the Office Telemetry Log and Office Telemetry Dashboard) |
| comp., MS | property definition | diffiniad o briodwedd (The characteristics or properties that define how a property is used and interpreted. The group of properties that forms a property definition is stored in a dictionary) |
| comp., MS | site definition | diffiniad o'r safle (A family of site definition configurations. Each site definition specifies a name and contains a list of the site definition configurations) |
| comp., MS | site definition configuration | ffurfweddiad diffiniad o safleoedd (An XML-based definition of lists, features, modules, and other data, that collectively define a type of SharePoint site. Site definition configurations are stored in the ONET.xml file) |
| comp., MS | site definition version | fersiwn diffiniad o'r safle (A zero-based integer that indicates the version number of the site definition. Every time a site definition is updated, it is suggested that the version number be increased) |