What Does User Experience (UX) Mean?

User experience (UX) is a concept in computing system and application design that studies and evaluates human feelings and expressions when using such systems.

Techopedia Explains User Experience (UX)

UX primarily studies the behavior, feelings, perceptions, reactions, emotions and other psychological constraints that may occur with a computer or computing enabled device or application. UX is the core of human computer interaction (HCI) technologies. It is also the key job role of a UX designer.