Hello. Can 'Entity Framework' be used for the purpose of entity definition at application runtime?

Ok, to make it simple, here is what I want to achieve:

• My application is a product. I should be able to define entities at runtime on the basis of inputs gathered from an 'authoring' user (in effect this means 'model first' approach).
• These entities are of course persistable. Further, after having defined the entities and their relationships, I should be able to make complex queries across them for many reasons, including reports.

Is the above possible and how? So far what I have realized is that there is a dependency on Visual Studio.