Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 171 of 333
- Likert Scale (Likert-type Scale, Rating Scale)
- A psychometric scale commonly used in surveys and questionnaires where respondents indicate their level of agreement with a statement, typically using options ranging from "strongly disagree" to "stro…
- Limb Difference (Limb Deficiency, Upper-Limb Difference)
- Limb difference is a term used to describe the absence or malformation of one or more limbs or parts of limbs. It can be congenital (present from birth) or acquired through amputation due to injury, d…
- Lime Lighter
- A specialized hardware and software system developed by Dancing Dots, a company led by a blind musician, for reading and navigating music scores accessibly. The Lime Lighter includes features like Blu…
- Liminality (Liminal State, Liminal Period)
- A transitional state of being "betwixt and between" established social positions, originally described by anthropologist Victor Turner. In accessibility contexts, liminality refers to the uncertain, i…
- Limited Mobility (Reduced Mobility, Mobility Impairment)
- A condition where a person has restricted ability to move their body or specific limbs, which may affect walking, reaching, grasping, or fine motor control. Limited mobility encompasses a wide range o…
- Line Chart Accessibility (Accessible Line Graphs, Chart Accessibility)
- The practice of making line charts and graphs perceivable and understandable by people with visual impairments through alternative representations such as tactile graphics, sonification, speech descri…
- Line Graph (Line Chart, Line Plot)
- A type of data visualization that displays information as a series of data points connected by straight line segments, commonly used to show trends over time or relationships between variables. Line g…
- Line Spacing (Leading, Line Height, Line-Height)
- The vertical distance between lines of text, controlled in CSS by the line-height property. Adequate line spacing is important for readability and accessibility, particularly for people with low visio…
- Line Standing (Queueing, Standing in line, Line navigation)
- The everyday social activity of waiting in an ordered queue — at a cashier, bus stop, check-in counter, or reception desk. For blind people, line standing is an often-overlooked accessibility challeng…
- Line Tracing
- A reading technique in which a user physically follows lines of text with their finger or a pointing device, typically while receiving feedback to maintain accurate positioning. In assistive technolog…
- Linear Communication Model (Shannon-Weaver Model, Sender-Receiver Model)
- A model of communication in which information flows in one direction from a sender to a receiver through a channel, with no feedback mechanism. In the context of AAC, a linear model means the user con…
- Linear Discriminant Analysis (Fisher Discriminant Analysis, Fisherfaces)
- A statistical method used in pattern recognition and machine learning that finds a linear combination of features to best separate two or more classes of objects. In the context of face recognition, L…
- Linear Interaction (Sequential Interaction, Single-path Navigation)
- An interface design pattern in which users engage with only one screen or task at a time, following a single sequential path rather than managing multiple overlapping windows, tabs, or concurrent cont…
- Linear Notation (Linear Mathematical Notation)
- A system for representing mathematical expressions in a single line of text, as opposed to the conventional two-dimensional spatial layout used in print mathematics. In standard mathematical notation,…
- Linear Scanning (Row-column scanning, Automatic scanning)
- An input method for AAC devices and on-screen keyboards where selections are highlighted sequentially, typically row by row and then item by item, allowing users with severe motor impairments to selec…
- Linearization (Content linearization, Serial presentation)
- The process by which screen readers convert two-dimensional visual page layouts into a single sequential audio stream, reading content in DOM order. Linearization strips away spatial relationships, vi…
- Lingraphica
- A commercially available computerized visual communication system designed to help people with aphasia communicate through icon-based sentence construction. Lingraphica provides a vocabulary of purpos…
- Linguicism (Linguistic Discrimination, Language Discrimination)
- Discrimination or prejudice against individuals or groups based on the language or dialect they use, often intertwined with racism and ableism. In the Deaf community, linguicism commonly shows up as t…
- Linguistic Accessibility
- The principle that information, services, and opportunities for participation should be available in a person's preferred language and communication modality. For Deaf and Hard of Hearing individuals,…
- Linguistic Imperialism (Language Imperialism)
- The imposition of one language or language modality over others, often by dominant groups over minority language communities. In deaf contexts, linguistic imperialism manifests when spoken language is…