intercolumniation

The spaces between adjacent columns (of a colonnade).

The system of such spacing.

[W]hen vvee ſpeake of the Intercolumniation or diſtance, vvhich is due to each Order, vve meane in a Dorique, Ionicall, Corinthian Porch, or Cloiſter, or the like of one Contignation, and not in Storied buildings.

How intercolumniation is regulated in the Doric Order has been already explained at page 20: in that, the distances between the columns is governed entirely by the triglyphs of the frieze, so that there can be no medium between monotriglyphic and ditriglyphic intercolumniation, accordingly as there is either one or two triglyphs over each intercolumn.