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usability
(redirected from unusable)

    Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.07 sec.

How easy something is to use. Both software and Web sites can be tested for usability. Considering how difficult applications are to use and Web sites are to navigate, one would wish that more designers took this seriously. See user interface and usability lab.

(programming)usability - The effectiveness, efficiency, and satisfaction with which users can achieve tasks in a particular environment of a product. High usability means a system is: easy to learn and remember; efficient, visually pleasing and fun to use; and quick to recover from errors.

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