1) Areosystyle 
Araeosystyle (Gr. αραιος, `widely spaced`, and συστυλος, `with columns set close together`), an architectural term applied to a colonnade, in which the intercolumniation is alternately wide and narrow, as in the case of the western porch of St Paul`s Cathedral and the east front of the Louvre by Perrault.{sfn|Chisholm|1911|p=312...
• (a. & n.) See Intercolumniation.
having an intercolumniation alternately of two and four diameters.