Well, a look in the dictionary tells us that world is a noun and can mean:
1 : the earth and all the people and things upon it
2 : people in general : HUMANITY
3 : the system of created things : UNIVERSE
4 : the concerns of the earth and human affairs
5 : human society
6 : a class of persons sharing a common interest or activity
7 : a part or section of the earth and the people who live in it
8 : the scene of one's life and action
The word view,in this instance, is a noun and can mean:
1: the act of seeing or examining
2 : OPINION
3 : all that can be seen from a certain point
4 : range of vision
So, when we say world view, we mean the way that we see the many worlds we live in. There are many influences on how we see our worlds--our heritage, our family, where we live, what experiences we've had, what we like to do, our friends, our teachers, the type of government we have, even the type of home we live in!
Knowing what influences each one of us can help us to make choices about how we write to influence others.