Learn in the textbookUX Methods, Cognition, and Visual Representation
DefinitionAccessibility (アクセシビリティ) is the degree to which diverse people, including older people and people with disabilities, can use information, devices and software on an equal footing.
ExplanationOn the Web and in software, the degree rises as measures are added for differences in how users see, hear and move their bodies. Universal design (ユニバーサルデザイン) is a design approach that assumes differences between users from the start and aims to make things usable by as many people as possible, and it serves as a policy for raising accessibility.
AnalogyIt is like an elevator that also has buttons at a low height with Braille on them, so wheelchair users and people with poor eyesight can press them on their own.
Memory hookThe word is accessible (reachable, usable) plus -ity, a suffix for a quality or degree.