usability

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usability

[‚yüz·ə′bil·əd·ē]
(industrial engineering)
The characteristics which enter into a product's design and are related to its quality and reliability that enable users to perform tasks quickly and error free, as well as reduce the time and mental effort to learn or operate the product. Also known as ease of use; user friendliness.

usability

(programming)
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.

http://orrnet.com/.

usability

Usability is how easy hardware or software is to operate, especially for the first-time user. Considering how difficult applications and websites can be to navigate through, one would wish that all designers took usability into greater consideration than they do. See hallway testing, good user interface, user interface, RTFM and usability lab.