UX Design is used pretty broadly. In terms of tech it means you are designing the functionality for an app or website with how the user would be interacting with it in mind. For example if you are creating a menu bar on a website you should ask how the menu bar would look, how you think the user would interact with it, and why you chose to create the menu that way. A UX Designers job is to make a web or app experience as seamless as possible. But outside of tech the same principles apply... creating a product while thinking about how the user would use it and making it as logical and seamless as possible. UX Designers actually come from many different backgrounds including psychology, human computer interaction degrees, or the traditional graphic designer. Hope that helps!