Latin intercolumnium space between two columns, from inter- + columna column
First Known Use: 1624
In architecture, the space between columns that support an arch or entablature. Classical, Renaissance, and Baroque architecture used a system codified by Vitruvius in which the measurement is expressed in terms of the columns' diameters (e.g., two columns might be described as being three diameters apart). The system conveniently expressed the measurement of a unit of space whose size varied from building to building according to the Classical order used.