Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 302 of 333
- Transparent Video Overlay (Transparent Video, Video Overlay, Translucent Video)
- A display technique where a live video feed is rendered as a semi-transparent layer on top of another application, allowing users to see both the video content and the underlying application simultane…
- Transphobia (Anti-Transgender Prejudice, Anti-Trans Bias)
- Transphobia refers to prejudice, discrimination, and hostility directed at people who are transgender, non-binary, or whose gender identity or expression differs from their sex assigned at birth. In d…
- Transportation Accessibility (Accessible Transportation, Mobility Accessibility)
- The design and provision of transportation systems, services, and infrastructure that are usable by people with disabilities. Transportation accessibility encompasses physical access to vehicles and t…
- Trauma-Informed Care (TIC, Trauma-Informed Approach)
- A framework originating in social work practice that asks organisations and service providers to recognise the widespread impact of trauma on the people they serve and to integrate that understanding …
- Traumatic Brain Injury (TBI, Acquired Brain Injury, Head Injury)
- An injury to the brain caused by an external bodily force, typically from road traffic accidents, falls, or other impacts. TBI severity is classified using the Glasgow Coma Scale (GCS): mild (GCS 13-1…
- Traumatic brain injury (TBI, Acquired brain injury)
- An injury to the brain caused by an external force such as a blow, jolt, or penetrating object, resulting in temporary or permanent impairments to cognitive, physical, and psychosocial functioning. TB…
- Travel Chain (Mobility Chain, Journey Chain)
- A travel chain is the complete sequence of connected stages that make up a journey from origin to destination, including planning, leaving the starting point, walking to transport, using public transp…
- Travel Training (Mobility Training, Independent Travel Training)
- Structured instruction that teaches people with disabilities how to travel independently and safely using public transportation or walking routes. Travel training typically involves repeated practice …
- Tree Navigation (Hierarchical Navigation, Tree View Navigation)
- The process of moving through and exploring hierarchical data structures (trees) such as file systems, program structures, organizational charts, or menu systems. In accessible computing, tree navigat…
- Tremor (Hand Tremor, Essential Tremor)
- An involuntary, rhythmic shaking movement of one or more parts of the body, most commonly affecting the hands. Tremor can result from various conditions including essential tremor, Parkinson's disease…
- Trichromat (Trichromacy, Trichromatic Vision)
- A person with typical colour vision based on three types of functional cone cells (L, M, and S cones) in the retina, each sensitive to different wavelengths of light corresponding roughly to long (red…
- Trigger Avoidance (Avoidance Behavior, OCD Avoidance)
- A compulsive behavior pattern in OCD where individuals minimize or eliminate contact with situations, objects, people, or places that trigger their obsessions. Trigger avoidance ranges from subtle ada…
- Trigger Hierarchy (Exposure Hierarchy, Fear Hierarchy, Fear Ladder)
- A ranked list of situations, objects, or thoughts that trigger OCD anxiety, ordered from least to most distressing as measured by subjective distress ratings (SUDS). Trigger hierarchies are a foundati…
- Trigram (3-gram)
- A sequence of three consecutive words used in statistical language modeling for word prediction. Trigram models predict the next word based on the two preceding words, capturing more context than simp…
- Trimodal Feedback (Triple-Modality Feedback)
- A form of interface feedback that delivers information through three simultaneous sensory channels — typically auditory, haptic, and visual. Trimodal feedback offers the highest level of redundancy in…
- Triple Jeopardy
- A framework describing the compounded discrimination faced by individuals who hold three intersecting marginalised identities — in Bowleg et al.'s original formulation, Black lesbians navigating racis…
- Tritanomaly (Tritan Anomalous Trichromacy)
- A rare type of colour vision deficiency where the short-wavelength (blue) cone cells have a shifted sensitivity range. Tritanomaly results in reduced ability to distinguish blue from yellow. It is the…
- Tritanopia (Tritan Dichromacy, Blue-Blind)
- A rare type of colour vision deficiency caused by the complete absence of short-wavelength (blue) cone cells in the retina. People with tritanopia have difficulty distinguishing blue from yellow and b…
- Trouble-Indicating Behavior (TIB, Trouble Source-Repair)
- Verbal or nonverbal behaviors that signal confusion, misunderstanding, or difficulty in communication. In research on dementia and human-robot interaction, TIBs are categorized into types including: r…
- Trove
- An online discovery service operated by the National Library of Australia that aggregates digitised books, newspapers, images, archives, and other cultural-heritage content, with integrated OCR-error …