Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 124 of 333
- Fluctuating Disability (Variable Disability)
- A disability whose symptoms and severity vary over time, sometimes day to day or even hour to hour. People with fluctuating disabilities may experience periods of relatively high function alternating …
- Fluency (Text fluency, Grammatical fluency)
- In natural language processing and text simplification, fluency is the degree to which a piece of text is grammatically correct and reads naturally in the target language. It is one of three standard …
- Fluid Traversal (Fluid Navigation)
- A navigation design principle for screen reader interfaces that aims to mirror the flexibility of sighted visual attention. Fluid traversal has two key properties: it should be concise (requiring mini…
- Fluid intelligence (Fluid reasoning, Gf)
- The cognitive ability to reason, solve novel problems, and identify patterns without relying on previously acquired knowledge or skills. Fluid intelligence typically declines with age and is commonly …
- Focus Group (Focus Group Discussion, Group Interview)
- A qualitative research method in which a small group of participants (typically 3-10) with shared characteristics discuss a topic guided by a moderator, allowing researchers to explore perspectives, o…
- Focus Indicator (Focus Ring, Visible Focus, Focus Outline)
- A visual cue that shows which interactive element on a page or in an application currently has keyboard focus. Focus indicators are typically rendered as an outline, border, or highlight around the fo…
- Focus Management (Focus Control, Programmatic Focus)
- The practice of controlling which element on a web page or application receives keyboard focus, and ensuring that focus moves in a logical and predictable manner as users interact with the interface. …
- Focus Mode
- A privacy technique in visual assistance technologies that spotlights a specific object of interest while obfuscating or hiding all other elements in the image or video. For example, a user might acti…
- Focus Order (Tab Order, Focus Sequence)
- The sequence in which interactive elements receive keyboard focus when a user presses the Tab key or uses other keyboard navigation. In accessibility, a logical focus order that follows the visual and…
- Focus and Context (Focus+Context, Detail in Context)
- An information visualization and interaction design principle that simultaneously presents detailed information about a specific item of interest (focus) alongside an overview of the surrounding struc…
- Focus trap (Keyboard trap, Focus lock)
- A web accessibility barrier in which keyboard focus becomes confined to a particular element or region of a page, preventing the user from navigating away using standard keyboard commands. Focus traps…
- Focus+Context (Focus plus Context, Focus and Context)
- A visualization interaction paradigm that integrates a detailed focus region and its surrounding context into a single unified view, rather than separating them. Techniques include fisheye views, sema…
- Focusable Element (Keyboard Focusable, Focus Target)
- A GUI element that can receive input focus, allowing users to interact with it via keyboard, switch device, or assistive technology. For screen reader users navigating mobile apps, an element without …
- Focusmate
- An online platform that facilitates virtual body doubling by matching users with accountability partners for timed video co-working sessions. Users keep their cameras on, state their goals at the begi…
- Font Accessibility (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, find…
- Font Embedding (Embedded Fonts, PDF Font Embedding)
- The practice of including the complete font data within a PDF document so that the text can be accurately rendered and read regardless of whether the font is installed on the viewer's system. Font emb…
- Font Size (Text Size, Type Size, Point Size)
- The measurement of how large characters in a typeface are displayed, typically expressed in points (pt), pixels (px), or relative units (em, rem). Font size is a critical accessibility concern because…
- Food Desert (Food Swamp, Low Food Access Area)
- A geographic area, typically in low-income communities, where residents have limited access to affordable and nutritious food due to the absence of nearby grocery stores or fresh food retailers. Food …
- Foot-Based Interaction (Foot Input, Foot Gesture Interaction)
- An interaction technique that uses foot movements and gestures as input for controlling digital devices. Foot-based interaction is particularly relevant for people with upper body motor impairments wh…
- Force Feedback (Haptic Force Feedback, Kinesthetic Feedback)
- A type of haptic technology that applies physical forces to the user through a device such as a stylus, joystick, or glove, simulating the sensation of touching or interacting with virtual objects. Un…