Glossary

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Mark

An elementary entity capable of perception within a spatial substrate. In the visual design space, marks include points, lines, circles, and areas — the basic building blocks from which all visual representations are composed. A bar chart is constructed from rectangular marks…

Material Experience(also: Material Aesthetics, Material Interaction)

The multidimensional way people perceive, interpret, and emotionally respond to the physical materials of objects they interact with. The materials experience framework categorizes these experiences into four levels: sensorial (immediate physical sensations from touching,…

Medicalised Aesthetic(also: Medical Model Design, Clinical Aesthetic)

A design approach in assistive technology that prioritises clinical functionality over personal style, resulting in devices that visually signal disability through neutral, institutional-looking form factors such as plain plastic casings and uniform designs. Research with AAC…

Metamessage(also: Designer's Metamessage)

In Semiotic Engineering theory, the overarching one-way message that a designer sends to users through the system's interface, communicating who the system is for, what it can do, how to use it, and why it was designed that way. The metamessage is encoded through interface signs…

Mixed-Initiative Design(also: Mixed-Initiative Interaction)

An interaction design approach in which both the system and the user can take initiative in directing the flow of interaction, rather than one party being entirely in control. In accessibility contexts, mixed-initiative design is used to balance automated system actions (such as…

Mixed-ability group(also: Mixed-ability setting, Inclusive group)

A group composed of individuals with and without disabilities who participate together in shared activities such as research, education, or design. Mixed-ability groups are valued in accessibility practice because they reflect real-world diversity and can foster inclusive design…

Motion Design(also: Motion Graphics, Motion-Driven Design)

The practice of animating graphic elements - text, icons, diagrams, captions - in time-based media to communicate instructional content. In accessible educational video, motion design is used to guide visual attention, sequence information, and pace the presentation of captions…

Multi-Stakeholder Collaboration(also: Multi-Stakeholder Design)

A collaborative approach that involves diverse groups of people with different roles, expertise, and lived experiences in the design and development process. In accessible design, multi-stakeholder collaboration typically brings together end users with disabilities, domain…

Multimodal redundancy(also: Redundant coding, Multi-sensory design)

A design principle in which the same information is conveyed through multiple sensory channels simultaneously — such as visual, tactile, auditory, and textual — so that users can access it through whichever modality suits their abilities and preferences. Multimodal redundancy is…

Multisensory(also: Multisensory Design, Multisensory Interaction)

An approach to design and interaction that engages multiple human senses — such as sight, hearing, touch, smell, and taste — to convey information and create richer experiences. In accessibility, multisensory design is valuable because it provides alternative channels for…

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