MDN Web Docs Glossary: Definitions of Web-related terms

Web technologies contain long lists of jargon and abbreviations that are used in documentation and coding. This glossary provides definitions of words and abbreviations you need to know to successfully understand and build for the web.

Note: If you'd prefer a web development glossary in book form, check out The Web Development Glossary (EPUB, MOBI, PDF). It’s a third-party glossary that includes the entries found here, and also adds a wide range of additional entries.

Glossary of Terms

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Glyph
A glyph is a term used in typography for the visual representation of one or more character.

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This glossary is a never-ending work in progress. You can help improve it by writing new entries or by making the existing ones better. The easiest way to start is to hit the following link or to pick one of the suggested terms below.

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See also