Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- POUR Principles(also: POUR, Four Principles of Accessibility)
- The four foundational principles of the Web Content Accessibility Guidelines (WCAG): Perceivable, Operable, Understandable, and Robust. Perceivable means information must be presentable in ways users can perceive (e.g., alt text for images, captions for video). Operable means…
- Perceivability(also: Perceivable)
- The quality of information or interface elements being detectable through one or more senses — sight, hearing, or touch. Perceivability is the first principle of WCAG 2.0 and requires that information and user interface components be presentable to users in ways they can…
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