Top Seven UX Design Definitions
http://uxdesign.com/about-user-experience-design/article/top-ten-seven-definitions-of-ux-design/24

Cummings, Michael
UX Design
2008

Abstract:

Having determined to collect and share with you the top ten definitions of User Experience Design from the most credible sources, and so you to form your own, say, meta impression, I found the network falling just short. So, here are the top seven, with an invitation to you to contribute those definitions of user experience design (full three terms) that you find or know of. Inclusion is conditional, however, on a credibility standard that can only be defined as “secret sauce.”