Diastyle

diastyle
A term used to designate an intercolumniation of three or four diameters.
diaulos ...

terms abutment or abuttal, architectonic, architectonics, architectural, astylar, bolster, bracket, castellated or castled, cinquecento, cloistered, colossal or giant, composite, cradling, crenellate or (U.S.) crenelate, denticulate, diastyle, ...

Intercolumniation - The space between columns measured in diameters. Vitruvius established five main ratios, 1½ D Pycnostyle, 2 D Systyle, 2½ D Eustyle, 3 D Diastyle, 4 D Araeostyle.

See also: Arch, Greek, Architecture, Floor, Roman