a set of presuppositions and beliefs that someone uses to interpret and form opinions about his humanity, purpose in life, duties in the world, responsibilities to family, interpretation of truth, social issues, etc
A world view is a person's fundamental image of the world -- one's set of core beliefs about how his or her social environment is put together. It involves one's fundamental values about what is good and bad; it involves beliefs about who does what and why; it involves assumptions about what causes events and what those events might later cause. World views are closely linked with a person's sense of identity. People see themselves as part of some groups and not part of others, of having a particular role to play in society, and particular relationships with others. One's image of who one is results from one's fundamental image of the world and one's image of how one relates to other people in it.
A world view (or worldview) is a term calqued from the German word Weltanschauung meaning a "look onto the world." It implies a concept fundamental to German philosophy and epistemology and refers to a wide world perception. Additionally, it refers to the framework through which an individual interprets the world and interacts in it.