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Meaning of intercolumniation

in•ter•co•lum•ni•a•tion

Pronunciation: (in"tur-ku-lum"nē-ā'shun), [key]
— n. Archit.
  1. the space between two adjacent columns, usually the clear space between the lower parts of the shafts.
  2. the system of spacing between columns.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.