ppl. a. [f. L. columnāt-us supported upon columns + -ED.] Furnished with columns, supported upon columns.

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1703.  T. N., City & C. Purchaser, 251. Columnated-window-stairs … were set upon Columns, that the light (which they receiv’d from above,) might distribute it self to all parts alike.

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1864.  in Webster.

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