Serliana
A three-part window featuring a large central arch flanked by two smaller rectangular openings. Named after the 16th-century Italian architect Sebastiano Serlio, who first detailed it in Architectura (1537), it is also known as the Serlian motif. Since Andrea Palladio frequently used this design, it is sometimes referred to as the Palladian motif or Palladian window. However, as similar designs predate both Serlio and Palladio, it is also called a Venetian window. The design became widely popular in 17th- and 18th-century Palladian architecture, particularly in Britain.