Palladian

What is quite certain that Georgian Palladianism without him [Colen Campbell] would have developed later and would have been quite different, and the legacy of the English Palladians, accepted but rarely acknowledged by their most adventurous but no more dedicated successors, would have been less rich.

Anything [i.e., any type of window] with a rounded top became known as a Palladian and was seen as an instant evocation of history, status, class, and tradition. In some cases, an oversized Palladian filled an entire facade of a house.