dado

architecture

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dado, in Classical architecture, the plain portion between the base and cornice of the pedestal of a column and, in later architecture, the paneled, painted, or otherwise decorated lower part of a wall, up to 2 or 3 feet (60 to 90 cm) above the floor. Internal walls were so treated between the 16th and the 18th century, though toward the close of that period the dado was left plain and merely defined by a rail along the wall.