Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Understandability(also: Understandable, Comprehensibility)
- The quality of information or interface elements being cognitively accessible — meaning a user can not only perceive the content but also internalise its meaning and know how to act on it. Understandability is one of the four principles of WCAG 2.0, requiring that information…
- Usability Barrier
- A type of access barrier where a task can technically be completed but not with the desired qualities such as speed, ease, accuracy, or comfort. Unlike failure point barriers, the task is possible, but the experience of completing it is unsatisfactory. For example, a web page…
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