Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 313 of 333
- Violation Severity (Accessibility Violation Severity, Barrier Severity)
- A measure of how significantly an accessibility violation impacts users with disabilities, typically rated on a scale from no violation to critical barrier. In accessibility evaluation, violation seve…
- Virtual Acoustic Environment (Audio Virtual Environment, Acoustic Virtual Environment)
- A computer-generated environment that uses audio as the primary medium for representing spaces, objects, and interactions, enabling users to navigate and interact with a virtual world through sound. V…
- Virtual Auditing (Remote Auditing, Virtual Accessibility Audit)
- Virtual auditing is a method of assessing the accessibility of physical environments by remotely examining street-level imagery, such as Google Street View, rather than conducting in-person inspection…
- Virtual Collaboration (remote collaboration, virtual teamwork)
- Working together across distance using digital tools—synchronous meetings on platforms like Zoom, Microsoft Teams, or Google Meet, and asynchronous channels like shared documents, Slack, and issue tra…
- Virtual Cursor (Browse Mode Cursor, Virtual PC Cursor)
- A navigation mechanism used by screen readers that creates a linearized, text-based representation of a web page through which users can move sequentially. Unlike a visual cursor that points to a loca…
- Virtual Exploration (Virtual Navigation, Virtual Travel)
- The use of technology to simulate the experience of navigating or exploring a real-world environment without physically being there. For people with visual impairments, virtual exploration typically r…
- Virtual Human (Embodied Agent, Animated Character)
- A computer-generated human character used in accessibility applications to convey information through human-like movements, gestures, and expressions. In sign language accessibility, virtual humans se…
- Virtual Keyboard (On-screen keyboard, Soft keyboard, OSK)
- A software-rendered keyboard displayed on screen that allows users to input text by clicking, tapping, or hovering over virtual keys using a mouse, trackball, touchscreen, eye tracker, or other pointi…
- Virtual Learning Environment (VLE, Learning Management System, LMS, Online Learning Platform)
- A web-based platform designed to support teaching and learning by providing tools for content delivery, communication, assessment, and course management. Virtual learning environments typically includ…
- Virtual Patient (Virtual Client, Simulated Patient, Virtual Standardized Patient)
- A virtual patient is a computer-generated simulation of a person with specific health conditions or disabilities, used in clinical education to allow healthcare students to practise assessment, diagno…
- Virtual Peer (VP, Virtual Agent, Animated Conversational Agent)
- A computer-animated character designed to simulate peer interaction, typically used in educational or therapeutic settings. Virtual peers can engage in conversation, model social behaviors, and provid…
- Virtual Reality (VR)
- An immersive technology that creates a fully computer-generated environment, replacing the user's view of the real world with a simulated one. VR is typically experienced through a head-mounted displa…
- Virtual Reality (VR, Immersive Virtual Environment)
- A computer-generated simulation of a three-dimensional environment that users can interact with using specialized hardware such as headsets, motion controllers, or body tracking sensors. In accessibil…
- Virtual Reality Accessibility (VR Accessibility)
- The practice of designing Virtual Reality systems, applications, and experiences to be usable by people with disabilities. VR accessibility encompasses three interconnected layers: the physical layer …
- Virtual Signing (Avatar Signing, Synthetic Signing)
- Virtual signing is the use of computer-generated animated characters (avatars) to present sign language, as an alternative to pre-recorded video of human signers. Virtual signing systems typically inv…
- Virtual Texture (Simulated Texture, Haptic Texture)
- A virtual texture is a computer-generated tactile surface property rendered through a haptic device, simulating the feel of roughness, smoothness, or other surface characteristics without a physical m…
- Virtual Tour (3D Virtual Tour, Digital Walkthrough)
- A digital replica of a physical environment, typically captured using 360-degree cameras and depth sensors, that allows users to remotely explore and navigate through a space in a semi-immersive exper…
- Virtual Wall (Haptic Wall, Haptic Boundary)
- A simulated physical boundary in a haptic interface that the user can feel through a force-feedback device, modelled as a massless plate backed by a spring with stiffness and a damper with viscosity. …
- Virtual World (Virtual Environment, Online Virtual World)
- A computer-simulated environment where users interact with each other and digital objects through graphical representations, often in real time. Virtual worlds range from 2D browser-based platforms to…
- Virtual World Accessibility (Metaverse Accessibility, VR Accessibility for Blind Users)
- Virtual world accessibility refers to the design and implementation of techniques that enable people with disabilities, particularly blind and visually impaired users, to participate in 3D virtual env…