Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Fidelity
- An expression of how accurately a representation reproduces its source. A photograph is a high-fidelity visual representation of a scene but loses depth, sound, and smell. In accessibility and content adaptation, fidelity is a critical concern: when content is transformed from…
- Floating Action Button(also: FAB)
- A circular button that floats above the user interface in Android apps, typically representing the primary action on a screen. Defined by Google's Material Design guidelines, FABs usually display a simple icon (such as a plus sign, pencil, or heart) without visible text labels.…
- Font Accessibility(also: Accessible Fonts, Dyslexia-Friendly Fonts)
- The selection and design of typefaces to maximize readability for people with disabilities, particularly dyslexia and low vision. Research has evaluated various font properties for accessibility, finding that sans serif fonts, monospaced fonts, and fonts with distinct letter…
- Functional accessibility
- The degree to which a device or interface is usable by a specific user or user profile, either directly or through the addition of assistive technology. A system is functionally accessible for a given user if it enables them to complete their tasks, regardless of whether the…
- Functional affordance
- A design concept introduced in receptive design methodology that describes what a product or interface enables a user to do based on specific body functions, rather than general ability assumptions. Unlike traditional affordances (which describe what an object's properties…
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