Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 135 of 333
- Grapheme
- The smallest unit of a writing system, typically a letter or group of letters that represents a single phoneme (sound). For example, the word "ship" contains three graphemes: <sh>, <i>, and <p>. Under…
- Graphic Accessibility (Image Accessibility, Visual Content Accessibility)
- The practice of making graphical content — including charts, diagrams, maps, photographs, and illustrations — perceivable and understandable by people who cannot see them. Graphic accessibility encomp…
- Graphic Captions (Visual Captions, Animated Captions)
- A captioning approach that uses visual elements such as GIFs, animated stickers, icons, or emojis to represent sounds in audio-visual content, as an alternative or complement to traditional text-based…
- Graphic Input Device (Drawing Input Device, Graphic Tablet)
- A hardware device used to input and manipulate visual graphics on a computer, including digital drawing pads (digitizer tablets), styluses, mice, trackballs, touchscreens, and specialized assistive de…
- Graphic Score (Graphical Notation, Visual Music Score)
- A form of musical notation that uses visual symbols, shapes, colors, and spatial arrangements rather than traditional staff notation to represent musical ideas and instructions. Graphic scores communi…
- Graphic Transcription (Image Transcription, Accessible Graphic Transcription)
- The process of converting visual graphics (charts, maps, floor plans, diagrams) into formats accessible to blind and visually impaired users, such as tactile graphics, audio descriptions, or interacti…
- Graphicacy (Graph Literacy, Visual Literacy)
- The ability to read, interpret, and communicate information presented in graphs, charts, maps, and other visual representations of data. Graphicacy is considered a foundational literacy alongside read…
- Graphical Authentication (Graphical Password, Picture Password)
- An authentication method that uses images, patterns, or visual elements instead of text-based passwords. Graphical authentication leverages human visual memory, which is generally stronger than verbal…
- Graphical Model (Visual Model, Graphical Representation)
- In educational and accessibility contexts, a visual representation system that uses shapes, colours, spatial relationships, and physical manipulation to convey abstract concepts. Graphical models for …
- Graphical Password (Picture Password, Visual Password)
- An authentication method that uses images instead of text, requiring users to either recognize previously selected images (recognition-based) or recall specific points on an image (recall-based). Grap…
- Graphical Semantic Enhancement (Semantic Graphics, Labeled Graphics)
- The practice of enriching graphical objects with meaningful text labels, descriptions, and metadata so that they can be understood non-visually. In accessible drawing and diagramming tools, graphical …
- Graphical User Interface (GUI)
- A type of computer interface that uses visual elements such as windows, icons, menus, and pointers to allow users to interact with software, as opposed to text-based command-line interfaces. GUIs pres…
- Graphical User Interface (GUI, WIMP Interface)
- A visual interface paradigm based on windows, icons, menus, and pointer (WIMP) interaction, which became dominant in personal computing from the late 1980s onward. GUIs represented a major accessibili…
- Graphical perception (Chart perception, Visual data perception)
- The cognitive process by which people extract quantitative information from visual data representations such as charts, graphs, and maps. Graphical perception involves comparing positions, lengths, ar…
- Graphics Tablet (Drawing Tablet, Pen Tablet, Digitiser Tablet)
- An input device consisting of a flat surface on which a user draws or points with a stylus to interact with a computer. Graphics tablets translate the position and pressure of the stylus into cursor m…
- Graphviz (DOT, Graphviz DOT)
- An open-source graph visualization software suite that renders structural representations of graphs and networks from the DOT text specification language. DOT files describe nodes, edges, attributes, …
- Grasp Aperture (Hand Aperture, Finger Aperture)
- Grasp aperture is the distance between the thumb and opposing finger(s) as the hand opens to receive an object during a reach. It scales with perceived object size, peaks before contact at a value typ…
- Grasp Recognition
- Technology that detects and interprets how a user holds, grips, or manipulates objects, typically through sensors in VR controllers or camera-based hand tracking. In VR accessibility, grasp recognitio…
- Graspable Interface (Graspable User Interface)
- A graspable interface is a type of tangible user interface in which users interact with a computer system by physically grasping and manipulating real-world objects that are tracked by the system, typ…
- Gravity Well (Target Attraction, Sticky Targets, Snap-to-Target)
- An interaction filtering technique that warps the cursor space around interactive targets (such as buttons or links), creating attractive basins that pull the cursor toward the nearest target. This ma…