I have already done my research in dictionaries, but what I need is the concept behind the term. The phrase is used as a title in a magazine to describe beside a picture this unique chair designed by certain artist. It describes the item by giving this name, the name of the creator and its price. Nothing more.You've given us the context. Can you give us an actual sentence? Otherwise, I can only tell you what a dictionary or encyclopedia entry might contain--you checked a dictionary, of course?
Thanks, Esca. After looking at the chair, I think that it was named th Superstructure chair because its design and materials suggest, resemble, or echo the structural elements of a building.For anyone who's curious, this seems to be the chair in question.
It's a really neat chair, with (as we thought) an artistically notable structure.