usability
n. uncountablen. how easy and pleasant a tool or website is to use. It describes whether a person can achieve their goals without getting frustrated.
n. the degree to which a product, system, or service can be used by specified users to achieve quantified objectives with effectiveness and efficiency.
The new app design focuses on better usability for older people.
The software developers conducted several rounds of testing to identify usability issues that might confuse first-time visitors.
While the technical specifications of the device are impressive, its poor usability often prevents consumers from accessing the more advanced features hidden within the complex menu system.
From usable + -ity or use + -ability.
Often used in technical or design contexts; frequently paired with 'testing' or 'expert'.