intercolumniation
noun
- the space between two columns, measured from their axes
- the system of spacing a series of columns
See intercolumniation in American Heritage Dictionary 4
(ĭnˌtər-kə-lŭmˌnē-āˈshən)
noun- The open spaces between the columns in a colonnade.
- The system by which the columns in a colonnade are spaced.